At nearly 88 with no help in the house and a bad back I have to do things in stages. I can keep going for about 20 minutes of housework, cleaning, etc, then have to lie flat for half an hour. It's how I live now, rest and painkillers to get me through the day. But I'm not grumbling because my health is otherwise good and I'm still enjoying many aspects of life in spite of the pain.
I change the bedding every two weeks by stripping the bed in the morning, sorting out the clean bedding later, and then making the bed up even later. So it takes nearly all day, but it works for me.
Doing the washing, ironing, putting the rubbish out, etc, it's all getting more tricky now. But I'm determined to keep going until I drop. 