Alex was early so we didn't change formula until 7 months (approx).

Our paed recommended he stay on his original formula (S26 LF) until that stage, as he might have a lactose intolerance.

Which he does.

So we used a combination of S26LF and S26 Gold 6mth+ until 15 months, then on dietician's advice changed to soy milk after a lot of trouble with wind, vomitting and diarrhoea with cow's milk.