Anyone have any words of advice (or encouragement) in regard to fitness and Pneumonia?

I(34 M) run daily, do HIIT classes, in a soccer and tennis league. I don’t smoke or drink.

This last week I got hit with severe double pneumonia. So severe I’ve been in the hospital 2 days now but might go home tomorrow! I’ll be with an oxygen tank and IV antibiotics that I have to take for weeks before I’m better. A simple walk across the room can’t be completed without an oxygen tank at my side.

As anyone else been in this same situation? If so, PLEASE give me some advice as I’m just now processing all this and can’t imagine how long it’s going to take before I can even run a mile again (or even walk down the street!).

How long did it take you to really recover? Tips or tricks? Dos and donts?