The thing I'd worry the most is the fact that he watches himself in the mirror a lot. There's nothing wrong with taking care of yourself, but an hour straight seems too much.

As for the others two, I think it's normal that he would feel that way about his marriage- perhaps he just needs some more time. I'd talk to him about the fact that he doesn't respond to some messages ans ask him why.

In my opinion there's nothing wrong with backing up a bit, you both came out of a difficult relationship. Take care