This program helping me recover

I found this website and the program surely seems to be helping me. I have been following the advice on this page for about 3 weeks now.
Dr. Barbara Johnson Reversing Long Covid -- do a google search with those terms since I can't add a web address.
Of course I still have symptoms but I am much improved over what I was in June. I still have brain fog, tremors in head and upper body, headaches at times, heat bothers me, stomach pain if I eat a lot at one time especially after 4pm. I still can't do my morning walk more than about 3-4 minutes without my heart rate going up to 135 from about 65 resting rate.
In June I couldn't be on my feet more than about 30 minutes in the house and needed to lay down for an hour or two because I was totally exhausted and weak. I am now able to be on my feet around the house or shopping --(moving slowly though) for about 3 hours before I become weak and need to lay down.
The only really frustrating symptom is the weakness that comes on when I try to walk any distance. I'm still not able to do it when back in the spring I was walking about 45-60 min a day. However I found that exercise laying down or sitting is tolerable within limits -- such as a recumbent bike, chair exercises, etc.
Hope this helps someone.