Donna
The very first thing to do is find a good nutritionist. This professional will show you and teach you all about the dairy allergy. Our 8 year old grandson is violently allergic to anything in the dairy line. He has been raised totally on Soy milk. Loves it. Dr. says he is in perfect condition. Strong bones and good teeth. Please find help. It will be so much easier on you and also your precious little son.