Hi all,
Thank you so much for your advice and encouragement. I ended up just going. I didn't even have to mention it; he literally started apologizing without me saying anything the second I walked in the door so he must've felt weird about it. He basically just said he forgot and that it kept getting pushed off.
To me it's not a super big deal/if it were a friend or coworker I really wouldn't care (I'm pretty laid back in my personal life about things like this), but it does irk me a bit that I'm paying him as a professional and he literally straight up ignored my emails/didn't follow through with what he said he was going to do.
I don't really feel like it's worth bridging up unless this happens again because our sessions usually have so much jam-packed into them anyway that I don't want to waste time on this, but it does irritate me a tad.
Anyway, just wanted to update you all. Thanks for encouraging me to go!