My son has acid reflux still at 1 year old. He takes Prevacid and Zantac. The doctor thinks it might…

My son has acid reflux still at 1 year old. He takes Prevacid and Zantac. The doctor thinks it might be food allergy related. He is still on allimentum, we are going to try a small amount of milk at 15months. He still doesn’t eat much food. His food allergy has to do with his GI system so testing doesn’t come up positive. His reactions are delayed as well. Sometimes his belly hurts real bad or he gets diaper rash depending on what he eats. Any one else have this problem with their little one.