I have been experimenting a bit with dairy products with my 11.5 month old. He's fine with yogurt. I gave him a tiny bit of cheese and he did fine. When I gave him a slice of cheese, it gave him loose stool. I tried again a few days later and got the same result.
If he cannot tolerate cheese, would milk automatically be bad too?
DSD was allergic to milk, but she outgrew it around age 5.