I don't understand your particular situation, and am a relatively healthy middle-aged male, but I do think that the more exercise "Movement is Medicine" you can do, the better.
I find that even if I move a little bit, that little bit sets me up to do a little bit more, next time.
And each time, you will gain something. How much, who is to say, but you gain.
And slowly, over time, you are in a relatively better place.
Good luck to you, OtterBatHellCat, as I recall you are building a monster truck?
-John