Hello. been playing for about a year now, decided to learn how to play up in thumb position. i've decided i want to solo mostly up high from now on (Im a jazz player) so ive been pracitising hard up there. Problem is, i cant do more than about a solid 90 mins before the side of my thumb becomes so sore its unusable. it's fine the next day. any quick fixes for this? i tried putting super glue on it, but that didnt really work too well.
I think you will be fine for most gigs you do, don't worry about it, and keep practicing.