my experience might serve as an FYI for other folks.
i was an RN working 12hr days. lots of walking, almost all on my feet.
i had worked in this hospital for 18 yrs. had been paying for long term disability all that time.

my dr urged me to quit. but i just couldn't and kept pushing; for another yr or more. i thought if i went PT i could prolong my work life but it meant giving up my long term disability benefit. i only lasted another 2 mos. i physically couldn't do the job, my cognition was shifting and my coworkers were resentful that i was asking for some concessions like not having rooms at the end of the hall.

all in all i had to quit and had NO LONG TERM DISABILITY TO FALL BACK ON.
so consider my experience when you make these decisions. since i was turned down on my first ssdi try i had to hire the lawyer and wait another 18 mos to get any benefits, plus pay $800/mo for cobra.

yikes. i was in so much denial about my work. everyone saw the writing on the wall except me.