My high notes are almost always in tune, but my low notes aren't???
So, I used to struggle with out-of-tune high notes, and I practiced a lot to make sure my high notes were in-tune and that I could play them quiet. But now I have the opposite problem where I can't play loudly anymore and my middle register is always 10 cents sharp or flat. I'm in high school right now, so I don't have much time to put into improvement aside from 10 minutes on weekdays and an hour on weekends. Any tips?