He has POA#2, my mentally unstable step-sister, and POA#3 my step-brother who lives 6 hours away. My brother and I, the bio kids, are in complete agreement with my dad's care as POA #1 has been handling things. We have great concern if #2 becomes POA, while POA #1 is in the hospital for a week. #2 can change access, care, etc.
I live 1000 miles away, my brother lives nearby my dad. Property has recently been transferred to me and my brother as per my dad's wishes. I am more concerned with his care and the fact that even though he doesn't want any type of life support, POA#2 is determined to prolong his life and, therefore, misery any way she can. She doesn't see the situation for what it is-0% quality of life, and no chance for recovery.
Is there anything I can do to prevent POA#2 from making changes during POA#1's incapacitation?