I read a study where 44 Y/O people are at
the perfect age to take up drumming. Not 45. Not 43. 44. So yea, great timing
Also, don't think of it as being nervous.
You are actually feeling excitement.
Also, completely dump any worry today and replace it with constructive, positive thoughts about how great it will feel.
For me, when my body just refuses do do something I'm telling it to do...that cracks me up and I have to overcome it. That's the fun part for me. It's nothing anyone should be worrying about.
Drums are first and foremost, a fun instrument to play. Have fun! Whoppee! You're feeling all different kinds of excitement, and that's great. Stifling that would be kind of un-natural, and could make you sick even. So now you have to go through with it loI. I don't believe it's true worry that you are feeling, it's just all this energy. That's your fuel. Don't stamp down your own excitement, it's OK to let it run wild.
Worrying about parachuting out of an airplane...that's worry lol.