sorry to read that you have to deal with this illness.
I have to admit that I do not have experience with this disease. But from what I read, the symptoms of fatigue are the last to resolve. And it’s important to stay active to avoid too much deconditioning. Red flags you should be aware of are especially respiratory symptoms coming back. And any of the other symptoms you had. Other then that I would recommend going by feel and progress slowly. Listen to yourself how you feel after activity and monitor your response after workouts. Do you feel better, worse or the same afterwards…
I hope that helps at least a little!?
And maybe there is someone here on the forum who has experience?!
Have a good and quick recovery!