Next time you're there, book the next several sessions in advance. They may be heavily booked for the next month or so, but if you book further in advance, they'll probably have openings. I wanted to get a regular day and time, so when I made my next appointment, I said, how about 2 weeks after that? and two weeks after that... put me down. Now I know I go every two weeks at the same day and time.
The therapist is easy because I always book the next one as I check out while I'm there. If I have to call a doctor or dentist, especially a new one other than my regular one, I put it off forever because I hate to make the call.
No one can make you feel inferior without your consent. ...Eleanor Roosevelt