If you've checked that his temps are okay at both ends, and he's eating and pooping - even if it's only a little tiny bit, don't worry.
Reptiles can take a couple of weeks to settle down properly after a move - he's getting used to the different sounds, sights and smells around him now.
I wouldn't carry out a complete overhaul of his set-up until you're confident that he's settled, but small gradual changes should be fine. E,g - put an extra hide in there, then leave it several days before making the next change - say, swapping out some decor or whatnot. That way, he shouldn't be unduly stressed.