You have two changes at once here. You cannot attribute anything until one of them moves. Not on a relapse but the pattern is familiar.

Changing prescriber does not reset anything, and people discover that the hard way.

The last ten percent of a taper takes as long as the first ninety. Nobody says so until you are in it.

Is it normal to feel worse before better? Nobody told me that.

Following this because I am in the same place and have no idea what to ask at the appointment.

Sorry for the basic question, but how do you actually start one of these diaries?

Half of what people describe as tolerance is a change in the underlying condition, and the two need different answers.

No.