All I can tell you is lots of hugs. Hugs and touch are one of the best thing you can do for a child. I would also not give him any Sugar or sugary foods. All boxed foods has something like Sugar or corn syrup etc. All those things are bad for them. Why is this rich country of ours has so many problems with children. I have my examples to share. My son, a second child eats a lot of sugary stuff. He is always sick. He is 16 and does not want to listen to me at all. I hug him a lot and give him massages and it makes a difference. But his Sugar intake is very high.