How to change Nan OptiPro Plus 1 milk to Nan Total Comfort?

New milk can be introduced into the baby's diet in different ways. The first is to mix the milk used so far (Nan OptiPro Plus 1) with new milk (Nan Total Comfort), e.g. in a ratio of 2: 1, then 1: 1 (and gradually increase the amount of new milk compared to the previous one). You can also replace 1 meal a day with new milk – this way you will assess whether the new product is well tolerated by your child. Both methods are correct and depend mainly on the cause of the milk change. If it is intolerance to the previous milk, the second way will work better, which will show whether the baby responds better to the new mixture. I attach additional material: https://www.gdziepolek.pl/kategorie/mleko-modyfikowane