Squeeze ball type hand grippers help.
Don't give in, keep at it and your body will keep going, it is when you quit and slow down that you are asking for trouble.
Squeeze um. Hit speed bags. You will see the results within a few weeks.
Go slow at first and work up your time on the bag and your number of squeezes.
I'll be 65 this year, I still shoot the 44 mag, any gun I own I'll shoot.
I do prefer the 17L Glock 9mm, for its accuracy, plus it holds quite a few extra rounds.
I do carry a 45 Astra mdl 80 but it is not as accurate, at 7 yds though its not a biggie. An orange is easy to hit.
I normally put them where I want them, no reason to worry.
HQ