Hi there! My niece had the same issue. My SIL took her to a nutritionist for a couple of visits after asking her if she wanted some help organizing her meals.
The other thing is to see if there are any programs that he could get involved with that would help him socialize. And they don't have to be sports related, but it would be good. Especially if you could find an active activity that would see his height as an advantage. IF you could get him involved and the coach and you have a talk, perhaps he'll get really enthusiastic about the new activity and work hard at it.
The other thing, too, and I don't want to sound rude or condescending, is to make sure that you are living by example. You and the rest of the family. No diet for just one! I personally have found that you can do Weight Watchers without the rest of the family knowing about it. Seriously. If you are prepared to cook and serve foods, the recipes are extremely family friendly and you can control the portions that you dish out. It would be a lifestyle change, but I'll bet noone in the family would be the wiser, because the recipes are all "normal" -- stews, chilis, breads, and so on...
Hope it goes well!
Kira


