He is in the process of growing up! Its quite normal. And - he's boy - should be bigger anyway. Let him to eat as much as he needs to. The more food available around the less greedy he'll became.

__________________
"Do not meddle in the affairs of cats, for they are subtle and will pee on your computer." --Bruce Graham
There are no rules, rules are only for people who fit inside a box, if you want to think out of the box there is no hope... Life has no Box. (Tony Howells)