i looked after my one sister for a few years before her passing.
it was mainly to observe how she was taking care of her house [washing dishes, light cleaning, etc] and not accumulating MORE cats..........
we had a cleaning lady come in once a week, recruited from the area aging association.
luckily, the house she lived in was just a few blocks away from me.
it turned into a "second job" relatively quickly, and not a particularly enjoyable one..........