Hey. I would email him whatever you like. It is up to him to let you know of his boundaries around email contact etc and it sounds like you have been very sensitive to that. If he asked you a question that needs a response... Then you could respond by email. And simply say that you don't expect a response (that you appreciate that it takes time to compose one etc) and that you would like to discuss it in your next session. What he does with that is then up to him.

I don't think it sounds like the start of termination.

Can you tell him that you feel like you have lost a therapist and gained a divorce coach? That you miss your therapist? It sounds like he did appreciate that you were left feeling a little flat after the session. Maybe a little disconnected. I think it can be hard for therapists to know how best to recconect sometimes. They would like to, and they try... But it can be hard.

Can you tell him that you felt hurt that he forgot that he told you about his divorce? That it really impacted on you when he told you. That it was a little hurtful to find that something that really impacted on you was something that he forgot?

I think... That the way back to an emotional connection is to share the vulnerable feelings.