@renee53 Six years ago I was in your shoes. I had just finished the almost 2 years of the Big 3, with the last 6 months daily. Before that it was several rounds of treatment for pseudomonas. I cried because I couldn't even decorate my 4 foot Christmas tree.

Gradually over the next year I got 80% of my energy and 50% of my weight back. I continued to do things in 20 minute bites. 20 minutes of a chore, 20 minutes rest, 20 minutes enjoyable sedentary activity.
What helped me a lot was a high protein diet and daily walks - at first only 10 minutes, but eventually 1-2 hours a day. Fast wasn't the goal, slowly building endurance was. Also doing something I liked. (Don't look in the corners or at the wind at my house some things aren't important anymore)
The meds and infection took a big toll on your body and spirit. Hang in there and gently push onward. Let me know in a month how you are doing.