Like you I have been racking my brain, not just since being diagnosed but on and off for years. I used to have little business I ran from home but it is very difficult and ended taking over my whole life. The only suggestion I could think of would be to find things around the home you don't want anymore and sell them on ebay or Gumtree. Pet minding might be an option but I don't know how exhausting or if that could even be an option while having treatment with a lowered immunity.
If you think of something I would love to hear what it is.
Love
Joy xx