You gotta talk with (not "to") him! It sounds like you have a whole lot of "thinking" happening but haven't had a conversation on the subject where you check out how true some of your thoughts and "impressions" are. Thinking you "looked" unhappy, for example. The man is not a mind reader and can't know the extent of your anger and unhappiness and obviously doesn't know about your anger because you haven't told him because it is happening "now."

Work on the other side of the equation, what do you expect the guy to do? He has to go to the meetings, they're often "school" related - he has to take classes/courses/meetings every year to keep his license (my T had to change the day our sessions had been every week for 5 or 6 years!) and he doesn't get to pick what day/time/date they'll be. He's not missing seeing you for spite; it's not personal. Use the time apart from him to reassess how you cope and what you actually feel and what's going on with you on your own? You are going to that other city soon, this is a good opportunity before you go to start thinking/experiencing what it will be like on your own and figure out what you want to work on in the remaining time with him?