What are the APFT requirements for a permanent profiler that can only do one event?

im on a P3 (permanent profile) b/c i am being med-boarded. ive already been deemed unfit for duty and im just waiting on the VA to give me a percentage and cut my orders to get out. i have not had to take a pt test since i started med-boarding but all of the sudden my unit said i need to take one. my profile states i cant do push ups, the 2 mile run, or any alternative events, ONLY THE SIT UPS. i was told by my nco and a bunch of other ppl that you have to do at least 2 of the 3 events for the pt test to count. is this correct? if so what reg and/or where exactly can i find the answer to show it to my unit?