We don't sleep upstairs, however I was able to manage stairs (ones with a very strong rail) within 2 weeks. Fortunately our extra space upstairs, is just 2 extra bedrooms, a bathroom, and storage.
I used a walking stick.
I placed cushions under my feet to elevate my leg.
I made (sewing) a heavy long cotton band about 3" wide and 8' long (cotton was 12" wide before sewing, the folding and seams making it strong). To manoeuver my leg up by my foot sole (bed, chair, car).
My husband cooks very well, but I did make, freeze, or just store up food in advance (breads of all sorts, biscuits, soup, stew, pie).
Complete your physio several times daily after you arrive home.
Good luck.