My DM is full time carer to my her dad, my grandfather. (92 years old). He is not senile, but he has moments where he isn't very lucid. Physically, he's very frail.
They live in his home.
She tries to keep him to a normal timetable (i.e. awake and having breakfast in the morning...meals at normal times). But for some reason he keeps reverting to sleeping all day, then having 'breakfast' in the evening and being awake much of the night....
It's a total bind for my DM. How can she stop this happening...it always ends up more like that than not!