It is important to try your baby with milk now. This is to make sure that any improvement in their symptoms is due to cutting out milk (and they have a cow's milk protein allergy) rather than for any other reason.
Try to write down what your child eats and drinks during the challenge. Also note any symptoms e.g. sickness, loose nappies, rashes or any other changes in their atop dermatitis.
Follow the advice in the table below: each day, increase the amount of cow's milk formula given in baby's FIRST bottle of the day:
If you have not seen any symptoms in your child by day 5 (when you have completely replaced one bottle a day with cow's milk formula) you can try giving cow's milk formula for each feed they would usually have from a bottle.
Home challenge for an exclusively breastfed baby:
Simply start eating dairy products to the same levels as before starting on the diet.
If you see any obvious symptoms e.g. sickness, tummy pains, a rash, itching, STOP the challenge. Go back to the previous formula your baby was taking or to a milk free diet if you are breastfeeding, and inform your GP.
If you do not see any symptoms within 2 weeks of your baby having more than 150mls cow's milk formula per day, or you having resumed your normal diet containing milk, then your baby does not have a cow's milk protein allergy.