Extension of aides' hours from 8 to maybe 12 daily.

I live at home with my octogenarian parents to help out with my mom's dementia. My Dad (88) is her primary carer at his insistence. I am more like the housekeeper and chef, and I provide spot coverage when needed. We have helpers Mon -Sat from 10 - 4 (again Dad's preference), no one on Sunday. Occasionally, we have someone from 9 - 5 which I think makes a big difference. My 2 siblings and I think we should actually have a live in, but they are not willing to really push him on anything (I also think we should take the keys) and they also aren't really here to see what actually happens day to day.

My dad is finally coming around to some more help and we are trying to figure out hours etc. This weekend he is going away for Saturday night to a reunion. We will have one of her carers staying overnight. We are wondering how that works? Does anyone know? Should we put a cot in her room? Anyone who has advice please LMK. Also, what are good hours in general for a longer shift? I think 12. He seems to want more like 10. I think we'd like to make sure AM dressing and shower are covered and possibly and early dinner for her so she can be fed. Anyone's suggestions would be appreciated. Thanks.