That's hard to hear and I'm sorry for you
And honestly, I feel you very much
In my late youth I got a deep cut in my left little finger, which also cut a tendon
Can't move it that good anymore
Pretty much immediately, after letting it heal for 4-6 weeks, I tried playing
As I also have nerve damage, I don't really feel much in the finger as well
I could play some simpler chords, but after showing myself, that I still could, if I want, I pretty much stopped playing
Probably, because I don't want to see, that's it's just not working anymore, like it used to...
Still have a half-acoustic and an electrical one in my apartment, but neatly packed away and ready to pick up, if I ever get a real urge to try it again