I consider myself pretty flexible. My T does keep me on the same time and day about 90% of the time but I think some of that is because he fills up fast and doesn’t want to forget to save a spot for me. I have had other T’s though where it has been different every time. I gave one T permission to move me around as she needed to seeing as she was seeing me at a significantly reduced fee while I was in a rough patch. She only moved me once and gave me two days notice. Personally, I would not be able to deal with a T that frequently changed my time after it was scheduled. That just seems disorganized and unprofessional to me.