Ah, it looks like maybe you are beginning to recover...my daughter had long Covid, and described recuperation as two steps forward, one step back. The biggest thing she learned was to not overdo on good days. Just baby steps forward, then rest. And do the exercises...
Have you heard of the "Spoon Theory" of rationing your energy? Here is a very good explanation: https://butyoudontlooksick.com/articles/written-by-christine/the-spoon-theory/
It explains how to view your day, your energy, and how to direct your life as you recover. Hopefully, you can add a spoon to your arsenal every few days ..Sue