Sara has a good point.
What time do you put the patch on? Can you give him something really good and high calorie early in the day and later at night to help boost weight? Im thinking something like peanut butter toast with a banana milkshake for breakfast. The banana milkshake can be made with a banana, milk, carnation instant breakfast in chocolate, and even a scoop of ice cream. You can even get some protein powder to toss in without him knowing it.
At night you can give him added milkshakes made the same way or other fruit shakes or slushes, peanut butter on apples, cheese, make pudding and add some protein powder to it, make some custard, will he eat meat? have meat for him for late night snacks.
We did all these things for my middle son who was a beanpole. He was always thin and on ritalin. He did bulk up some eventually but he also went off medications at age 14. He is still fairly thin...well thin in my book...he is 6'5 and about 230.
