Oh no. Please don't write it off as a mistake / boundary transgression just yet. Waiting is hard... Tormenting. I get that. But please please please please please give him a chance to respond in session. It might be that his boundary thing around emails is that he has decided to respond to emails in session rather than by email.

Wait and see.

He might surprise you yet...

Fingers crossed for you both.

I'd really be super dooper surprised if he didn't bring it up in your session. And... I'd be really appalled if he wasn't good about what you said (and appreciated your honest communication with him).

That being said... I'm terrible at waiting...