I don't know your living situation but if you can when you feel up to it cook a few dishes that freeze well and divide into portions. Soups are great for the freezer. Put in smaller zip lock bags and freeze flat, they take up less room in the freezer. There are very tasty, easy ones that can just be made from canned stock, canned or frozen veg, canned chicken breast, or browning up some ground beef. Google the internet for 10 can or 8 can soups, they are great in a pinch. When you feel better you can go from scratch.
When I do scratch soups I take all the veggies to the table with my knife, peeler and cutting board. Pull the trash can over for scraps. I sit to peel and chop. I do it in order, cabbage, celery, onion, bell peppers go first into the pan with the stock or tomato base. Then carrots, potatoes, green beans, corn. Whatever the two of you like with meat of your choice
Beans or lentil soups are always good as well!!
My favorite, just a quick and easy simple potato soup with a milk/cream base. Some add other things but my Mom, it was just russet potatoes diced,in water till tender, don;t drain the water Then butter, milk and half and half, salt and pepper, simmer. This was the house sick soup, for any illness, anytime of year she went straight to the kitchen to make it. It is the same in my home. Son grown and married will ask me to make him a pot of potato soup when he feels bad.
One day at a time, don't push, do the best you can, much love!!