If your T. is already mature , it will not molt again. Sometimes they do molt after reatching maturity though, they call it a post ultimate molt and they normaly don't turn out too good.

They usualy end up pretty messed up when do go through a post ultimate molt so you're better off with no molts at all rather than one molt too much lol.

As long as he eats whatever you give him, you shouldn't be worried. But if it's a mature male , chances are that he will not have more than another year to live.

I could possibly try and tell you whats wrong , if there is something wrong , if you send pictures of your T. and the inside of the enclosure.

Good luck till then

have a good day

Krawll