One size don't fit all, my wife's mother is 87 and has alzheimer's.
There are 6 girls in the family and each one has a day each week when they stay in the Mother-in-Laws house , they all do 1 Saturday in 6, so basically she is looked after 24/7 by her daughters.
God bless them all because eventually she will need "Professional Care" , it will kill them if she has to go into a home.