Re: Cow milk vs Formula
Just as an FYI. About 50% of kids that have allergies (allergic or just sensitive) to milk will also be sensitive to Soy proteins.
My son is one of those! We knew of his milk allergy, and at 15 months the Peds GI had us start giving him Soy milk. He has had severe reactions to that, and we are re-evaluating all of his food/milk intake.
I would definitely have your son be seen by a doctor if not a GI specialist (if possible). They can help guide you in the right direction.
Goats milk is a good option, that most kids with milk and soy allergies can have. You can find it in the regular grocery store, right by the regular milk and soy milk.