You're going through a lot and yes you do need support. Especially from a significant other.

Wanting more time with him isn't a bad thing, per say, so I don't know why he's holding off. Do you initiate activities you two could do together rather than hang out at your place? What about a dinner date?

If he's happy to have sex once a week and then expecting you to move on; sounds a bit like he could be using you in the bedroom department.