Freeze a big cookup and keep in the freezer for when you have chemotherapy, and are not feeling well. Ignore housecleaning – spend your days doing stuff you enjoy. If the housecleaning is too much employ domestic help, or ask family or friends to assist.
Exercise
Skiing – hire snow shoes which are almost as much fun as skiing, but lessen the chance of doing damage if you fall over. (And lessen the chance of falling over.)