Big ((((hugs)))) Classy,
I've just spent the last 3 days at the hospital with my father, he doesn't listen, but I seem to remember and know if it weren't for all of the pain killers and other meds he's on (1 plate, 10 screws later) he'd say; "father knows best", but just this once I think the hospital staff knows a little better.
Take care of yourself and don't beat yourself up over it, being home has to be better for him, though more draining on you. I hope you have lots of family & friends close by that you can call on for some mini breaks, you need them. Being a caretaker full time is exhausting, physically and mentally. You are in my thoughts ~