Before I became a lawyer, I worked in mental health. And then there was my mother. I know the signs from an academic, a professional and an anecdotal perspective.
Yes, I've seen them. The man didn't have a cold. You can't fix this with ice cream or photo ops at a waffle house.
I feel bad for the man, because as you said, if it were your dad, you'd pull the plug... And that's exactly the problem. Jill Biden cares more about power than her husband and sorry, but that's just gross.