Milk Ladder: A Simple Guide to Reintroducing Cow’s Milk 2026

Updated September 2026 to reflect current guidance on cow’s milk reintroduction and the Milk Ladder.

The milk ladder is a structured way of gradually reintroducing cow’s milk protein into your baby or child’s diet after a diagnosis of cow’s milk protein allergy (CMPA).

If you’ve been given a copy of the iMAP Milk Ladder and told it’s time to start, you might be wondering what you’re actually supposed to do next.

How much should you give? How long should you stay on each step? What happens if your child has symptoms? And how do you know when they’re ready to move up?

These are questions I hear from parents all the time.

In this guide, I’ll take you through how the Milk Ladder works, when it may be appropriate to start, what to look out for as you move through the steps and what to do if things don’t quite go to plan.

The Milk Ladder is usually used for babies and children with non-IgE cow’s milk allergy, where symptoms are delayed rather than happening straight away.

If your child has an IgE-mediated milk allergy, where reactions happen quickly, the approach can be different. Some children may be able to introduce baked milk gradually, but this should only be done with advice from their allergy team.

If you’re not sure which type of milk allergy your child has, or whether they’re ready to start the Milk Ladder, it’s worth getting individual advice before you begin.

What is the milk ladder?

The Milk Ladder is a step-by-step way of gradually reintroducing cow’s milk protein into your child’s diet after a period of avoiding milk.

You start with foods where the milk protein has been well baked and is usually easier to tolerate, before gradually moving through foods containing less-heated milk and, eventually, fresh milk.

The amount and form of milk protein changes as you move through the steps, which is why it’s important to take the ladder at your child’s pace rather than rushing to get to the top.

What age should you start?

There isn’t one exact age that is right for every child.

The timing usually depends on when your child was diagnosed, how long they have been avoiding cow’s milk protein, whether their symptoms have settled and whether your healthcare professional feels they are ready to start reintroduction.

Many children start the Milk Ladder during infancy or toddlerhood, but the important thing is not the number on the calendar — it’s whether your child is well, symptom-free and ready to begin.

If you’re unsure whether now is the right time to start, it’s worth checking with your dietitian, GP or allergy team before you begin.

Only start the Milk Ladder when your child is well

Babies and toddlers often have things like teething, runny noses or changes in their poo, which can make it harder to tell whether a new symptom is linked to milk or something else.

If your child is clearly unwell, has a fever, tummy bug, chest infection, significant eczema flare or has recently needed medication, it is usually better to wait until they are well again.

The aim is to start at a time when their usual symptoms are settled, so you have a clearer picture of how they respond.

If you’re not sure whether your child is well enough to start, or they have symptoms that come and go regularly, that’s when individual advice can be really helpful.

Definitely don’t start the ladder if your baby has;

• A high temperature/fever
• Very loose stools – tummy bug
• Recently prescribed medication such as antibiotics
• A rash or flare-up of eczema
• A chest infection or bronchiolitis 
• Taken antihistamines in the last 5 days 

What if you are breastfeeding

If you are breastfeeding and your baby has cow’s milk protein allergy, you may be wondering whether you should reintroduce dairy into your own diet first or whether your baby should start the Milk Ladder directly.

There can be advantages and disadvantages to both approaches.

Introducing dairy to your baby.

Pros

• You know exactly what food your baby has eaten and how much they have had.
• If symptoms appear, it can be easier to link them to the food given.
• You can stop at the point where symptoms appear and discuss what to do next with your healthcare professional.

Cons

• Some babies may find it difficult to manage the portion sizes or foods used in the early stages of the ladder.
• Depending on your baby’s age and feeding stage, some foods may not yet feel appropriate or easy to introduce.

Reintroducing dairy through your own diet while breastfeeding

Pros

• This may feel like a gentler way to start for some families.
• It can sometimes help you understand whether your baby is still reacting while breastfeeding.

Cons

• It can be harder to work out exactly how much milk protein your baby has been exposed to.
• If symptoms are delayed, it may be more difficult to know whether they are linked to something you have eaten.
• This approach is not suitable for every baby, so it is important to follow individual advice.

So what do I recommend?

There isn’t one approach that is right for every breastfeeding family.

The best option depends on your baby’s age, symptoms, how they were diagnosed and whether they have reacted through breast milk before.

If you are unsure whether you should reintroduce dairy into your own diet first or start the Milk Ladder directly with your baby, this is one of those situations where individual advice can be really useful.

Want something to help you keep track? My free Milk Ladder Daily Planner can help you record which step you’re on, what your child has eaten and any symptoms you notice along the way.

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The 6-step or 12-step ladder?

The 6-step Milk Ladder is widely used in the UK and gives you a simple way to gradually introduce milk back into your child’s diet.

Each step uses a different type of milk-containing food. The lower steps contain milk that has been baked for longer and mixed with other ingredients, while the higher steps contain milk in less-heated forms.

A simple way to think about the steps is:

Step 1 – biscuit
Step 2 – cake
Step 3 – pancake
Step 4 – hard cheese
Step 5 – yoghurt or fromage frais
Step 6 – fresh cow’s milk

As you move up the ladder, the milk protein is exposed to less heat and the amount of milk protein usually increases.

This is why some children can manage the lower steps but may still react higher up the ladder.

Need recipe ideas for each step?

One of the biggest things parents tell me is that they understand the ladder, but then get stuck on what foods to actually give.

My Milk Ladder Recipe Book includes over 70 recipes across Steps 1–6, with different options for each stage so you’re not relying on the same biscuit, cake or pancake every time./

Why does the Milk Ladder work this way?

At the lower steps of the Milk Ladder, the milk protein has usually been baked for longer and mixed with other ingredients, such as flour.

Heating changes the structure of some milk proteins, which can make them easier for some children with milk allergy to tolerate.

As you move up the ladder, the milk is generally less heated and the amount of milk protein increases. That is why a child may manage biscuit or cake but still react to yoghurt or fresh milk.

You may also see ingredients such as whey or whey powder on food labels. These are milk proteins too, so they still count as milk-containing foods.

How to do the milk ladder

Once your child is ready to start, the aim is to move through the steps gradually and keep track of what they tolerate.

My free Milk Ladder Daily Planner can help you record:

• which step you’re on
• what food your child has had
• how much they managed
• any symptoms you notice

Download my MILK LADDER DAILY PLANNER BELOW based on the 6 step milk ladder

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How do I know if my child’s symptoms are due to milk?

This is one of the hardest parts of the Milk Ladder, especially because babies and toddlers can have things like loose poos, rashes, reflux or coughs for lots of different reasons.

What matters most is the pattern.

If your child develops symptoms that are similar to the ones they had before their milk allergy diagnosis, and they appear after moving up a step, that makes milk more suspicious.

Symptoms you might notice can include:

• vomiting or reflux
• loose stools or mucus in the poo
• constipation or tummy discomfort
• eczema or a red, itchy rash
• coughing, wheezing or other breathing symptoms
• congestion or a runny nose

One symptom on its own does not always mean the Milk Ladder is the cause. It is often about looking at what changed, when the symptoms started and whether the same thing happens again.

If symptoms are mild, stop at the new step and go back to the last food your child was tolerating.

If your child has a more significant reaction, especially swelling, breathing difficulties, repeated vomiting or they seem very unwell, seek urgent medical help.

If you are finding it difficult to work out whether symptoms are linked to milk, this is exactly the point where individual advice can be really useful.

I can help you look at the full picture — what your child ate, how much they had, when symptoms appeared and whether it is appropriate to continue.

Does the severity of my child’s milk allergy affect the Milk Ladder?

Yes, it can.

Children with cow’s milk protein allergy (CMPA) can progress through the Milk Ladder very differently. Some children with milder delayed symptoms may move through the steps quite smoothly, while others need more time at certain stages.

If your child has had more significant symptoms, has reacted more than once at the same step, or has a more complicated allergy history, it may be better to take things more slowly and get individual advice before moving on.

Try not to compare your child’s progress with someone else’s. One child may move through several steps quite quickly, while another may stay at the same stage for much longer.

If you’re not sure how cautious you need to be, or whether your child is ready to move up, that’s where looking at their full symptom and allergy history can really help.

Use my milk allergy food diary to help you with tracking progress with the milk ladder.

Should my baby stay on their hypoallergenic formula when they’re reintroducing cow’s milk protein?

This is all dependent on their age. 

Under 12 months

Yes, they should continue on their formula. If your baby gets to 12 months and can’t tolerate fresh cows milk to drink then you can start to introduce a fortified plant-based alternative. See my blog post on plant based milk for toddlers for more support.

12-18 months

Your baby is fine to continue with their prescribed infant formula up until around 18 months. After 18 months, I’d advise you to move them to a plant based milk alternative if they still can’t tolerate fresh cow’s milk to drink.

Your baby is also fine to switch to fortified plant milk at 12 months old as long as there are no concerns about their growth and they are having a well-balanced weaning diet. 

Does my baby need a multivitamin if they take hypoallergenic formula?

This depends on how much formula your baby is drinking and what else they are eating.

If your baby is having less than around 500mls of infant formula a day, they may need a vitamin supplement containing vitamins A, C and D (10mcg).

If they are having more than this, their formula may already be providing enough of these vitamins, so an additional supplement may not be needed.

Once your baby is eating more solids, their overall diet starts to matter too, especially if they are avoiding milk or other foods because of allergy.

If you’re unsure whether your baby needs a supplement, particularly if they have several food allergies or you’re worried about their intake, it’s worth checking with your dietitian, health visitor or GP.

My baby isn’t tolerating any foods, what can I do?

Firstly don’t worry, everyone goes at their own pace and not all babies will move up the milk ladder in the same way.

If you find that allergy symptoms are always present on a certain step when introducing a new food and you have tried 3 times on that same step then take a break. 

As I mentioned above, if an allergic reaction occurs take 2-4 weeks, however, if you can’t get past a certain step then instead take a little longer. It may be that illness is affecting your babies progress as you can’t always tell if the symptoms are due to milk allergy reaction.

Remember if you baby can tolerate a certain level of milk protein contained foods to keep them in their diet during this time.

I’ve written a separate guide on multivitamins for babies and toddlers if you want to read more about which vitamins are recommended and when supplements may be needed.

How long does it take to complete the milk ladder?

There isn’t one set amount of time it should take to complete the Milk Ladder.

Some children move through the steps quite smoothly, while others need more time at certain stages. It is completely normal for progress to slow down, especially if your child is unwell, teething, has a flare of eczema or reacts when moving up a step.

The aim is not to get to the top as quickly as possible. It is to gradually build tolerance at a pace that feels right for your child.

If your child is happily tolerating a lower step, that is still progress and they are doing amazing.

Many children do gradually outgrow cow’s milk allergy during early childhood, but the timing is very individual.

If you feel like your child has been stuck on the same step for a long time, or you’re not sure whether you should try moving forward again, that’s a really good time to get some individual advice.

Need a bit more help with the Milk Ladder?

If you want a simple guide to help you understand the Milk Ladder and work through it with more confidence, my Milk Ladder Book is designed to explain the process clearly and practically.

If you’re already using the ladder and want more ideas for what to give at each stage, my Milk Ladder Recipe Book includes over 70 recipes across Steps 1–6.

Bump2baby nutrition LTD accepts no responsibility for any adverse reactions that occur from following the milk ladder. The milk ladder should not be completed without the support of a registered dietitian.  If your baby is showing signs of anaphylaxis, please seek medical attention immediately.