Hi Andrew,
I know this is so difficult to deal with especially without a designated caregiver to lean on. Defintely contact the American Cancer Society for help. I have been exploring this as an option myself as a way to contribute and help others dealing with cancer.
What if you hired someone for just a few days a week to help you with errands and making meals to start out with and then take it form there? It may not be as expensive as you think.
You are in my thoughts. LOVE Kate