I would give it a try - my DS2 is milk protein intolerant and was completely dairy and soy free for 18months, now he's a bit older we have trialled a few things - soy he is fine with, butter, cheese, youghurt all fine but milk still a big no no for us - just trying to get his latest bout of excema cleared after his last milk trial! I would start by introducing a small amount and see how you go. Good luck