Hi guys, New to this site I was just posting cause I think I need some help with a few things. I'm 15 and am taking my grade 8 next year, passed my grade 7 on the cornet with 143 on the ABRSM board. Trying to play some of the pieces now, I really have committed to learning them and am practicing hour min each night which is all my schedule allows for atm. Problem is before this, a few months ago I could reach C's and D's (above the stave) with relative ease and yet now they just slip away! Can't reach them which is honestly frustrating when trying to play fanfare for the common man lol Hope you can offer any tips to increase or just to regain my previous range. May just be lip overuse and I am resting it every now and then but idk :S Thanks!