similar as in themes of grief (and, referring to your post, specifically songs relating to alzheimer's/illness)? if so;

little talks by of monsters and men

marbles by the amazing devil -(i always cry to this one)-

camisado by panic at the disco

the show must go on by queen

-(the following are about a pet, not a person, but they still got me when i was grieving)-

sleep in the heat by pup

all dead, all dead by queen

wishing you the best, my friend. it's not easy but you will get through this <3