I'm pretty much at 6 months into my recovery now and most of the tiredness from pneumonia has lifted. I can over exert, but we are talking 60 minutes plus of exercise to make me feel it the following day.
As I got back to full time work, I decided to slightly reduce the amount of walking distance I was doing to again find my baseline. I've done 2 weeks of physio now also, and each session is 60 minutes. I managed the second one rather well, although I do still get aches and pains.
I'm managing 20 minute walks almost every day, plus pottering around the house, and doing things, such as bring the shopping up when delivered.
I can stand in the shower now!
My leg weakness is reducing too. My neck pain was diagnosed as cervical spondylitis, and the physio thinks its related to my deconditioned state. I was on bed rest for 3 months pretty much, so lost a lot of muscle mass. To reverse that, could take 6 months, and i've been exercising for around 2 months.
Thankfully, my neck seems to be improving with the treatment program. However I need a fair amount of painkillers on some days, just depends!
The aim is to build up to 30 minute walks and hopefully have the strength in 1-2 months to resume jogging, when my legs are strong enough.
Sleep is improving, and the use of a worry diary helps, but I only do one when needed. Most days I have no worries now, as day to day, what is there to worry about that needs my attention that night!
So all going in the right direction!
I seem to be lurching from pillar to post, Oxygen compressors advice
It would have helped to exercise my arm and shoulder following lung surgery in order to avoid frozen shoulder
bronchiectasis, asthma and long covid
I had to post This ! 
