My father currently resides in an adult care home. He requires directed care. He requires assistance with all ADL’s with the exception of feeding himself. He believes he doesn’t need assistance and he can live by himself. No matter what angle I try, he does not recognize his disabilities.
When he gets talking about going home or the fact that he doesn't need any help, just tell him that when the 'doctor says he can live independently again, then you'll discuss it. Until that time comes, however, you need to stay where you're at, dad: doctor's orders." Then change the subject.
My mother had advanced dementia & until her dying day insisted there was nothing wrong with her; it was everyone ELSE in the Memory Care ALF that was 'crazy' and 'nuts'......she was fine. I didn't argue with her b/c there was no point in it.
Trying to be reasonable or logical with a dementia patient is futile. They've lost those skills, and there's no magical way around it to make them understand.
I'll post some links below with info on this. The medical name is: Anosognosia.
https://www.agingcare.com/articles/anosognosia-dementia-patients-cant-recognize-impairment-210090.htm
https://www.agingcare.com/articles/with-alzheimers-denial-isnt-always-what-it-seems-161439.htm
If you could find something, at least you could say ‘only when you can …..’ as well as just ‘when the doctor says’. That would make many of us resent the doctor and ask for a new one. If F needs PT, it could also help with motivation (whether or not that will really help). Perhaps you could substitute ‘let’s see if you can do xyz 10 times’, rather than just the endless repeat discussion about 'when can I go home'. Try exercises where he lifts a foot or an arm and holds its body weight while you count to 10, they won't do any harm.