Ah yes - RA, fibro, arthritis of the spine ---
The best thing I found is a rotary cutter that has a bend to it. It is so much easier on my hands.
I have my cutting table raised up so I don't have to bend over so far. I also found a very comfortable stool with a back so I can sit and cut smaller pieces.
I found compression gloves that help support my hands so I can sew a little longer.
I do have to pace myself because i work fulltime.