You're making me feel bad reading this.
I don't have any physical excuses - just somehow losing interest in the last few years of performing any longer.
I still play and sing some 5-6 days a week, but just not as engaged as I once was.
I find myself on the classical well over half of my playing time too - but it's because it fits my ear so much better. I've become quite adverse to strident metallic sounds (good news I have a steel string that doesn't have any!).
Retired six weeks ago and part of me feels I should be doing more with it - but another knock against me is my allergies just keep getting worse and it makes it so hard to sing in the spring and summer.
Maybe by this fall when golf and cycling season is over I'll change my course.