Pretty sure Phil got a dementia diagnosis.
Dementia is a strange disorder.
I have seen folks who live 10-12 years after diagnosis, sometimes the last 5+ being a pretty sad situation.
I have also seen folks who were fine, and then dead less than two years after diagnosis.
Some folks are just forgetful, but remain somewhat happy and then slowly shut down.
Others become mean, accusative, paranoid, violent, etc.
It sucks…………..it really sucks!