I use a generic yet ambidextrous logitech wireless mouse. Other than making sure I have proper forearm/wrist position, one thing that I did that made a big diff

I use a generic yet ambidextrous logitech wireless mouse. Other than making sure I have proper forearm/wrist position, one thing that I did that made a big difference is I started using the mouse with my left hand. Giving my right hand/wrist time to rest for weeks at a time has been very beneficial. I get far fewer cramps and much less tightness now. It definitely took some time to get used to it, but using my left hand started to feel comfortable way faster than I thought it would. Might be worth a shot!