Yeah, I'm pretty certain that I'm not over-feeding him. He doesn't seem hungry after he eats and he's growing normally.
I'm a bit iffy about feeding him in his enclosure, wouldn't he just get reconditioned into thinking that everything that comes into his enclosure is food?
What I might do is just tough it out and start getting him out of his cage a lot more frequently for handling, that way he knows that he's not always coming out of his enclosure just to eat.