DS' doctor suggested adding cream to his bottles, food, etc. for increased calories. We fix carnation instant breakfast with whole milk and cream, I pour cream and whole milk on his cereal. He eats several slices of cheese on the way to gymnastics for a snack. His latest favorite is spaghetti with LOTS of canned parm. cheese. I may need to start buying it at sam's club we've been going thru it so quickly. Haven't noticed any mucus issues from dairy.