Perhaps I need a different chair. Or a different focus. I don't know.
I mostly lay down or walk/stand around the house.
Sitting on hard bench makes my vulva burn (Trying coconut oil) and get irritated. EVen my perineum (posterior part of my vagina) gets irritated. So I experiment with sitting on a small cushion on top of a hard bench.
I have one office chair that I can sit at a right angle in. That works better than most things.
My cough, my bed, those are out in terms of sitting on.