Thanks for your replies.

He is a grazer and loved to eat fruits and vegies. He will go to the fridge through out the day and get an apple or a carrot or what ever else he wants. I like the idea of a snack box, I might make a shelf on the fridge just for him so he can get what he likes. I'm not overly concerned but it is an issue for DH. The log book sounds like a good idea too.

I am about to make him lunch and thought I would try an island of mashed potato with some tree's (brocolli) and some peas around the base like water.

I'm sure he will get better with time...