I can't understand what is happening with my trumpet playing. It appears to be going backwards (at least in range and endurance) and not going forwards in anything else.
I try to play at least an hour a day (most days considerably more), and I practice long tones, breathing, lip slurs, tonguing, technical studies; all of the things that people say constitutes a good routine, I also take breaks regularly.
I'm comparing my playing now from what it was in the summer, where I could happily play a high C (play not squeal) even at the end of a rehearsal. But now I can't even play on at the start (I'm using range as an example as it is the biggest change in my playing).
If anybody has any idea of what the issue could be, please state.