Hi Mindig
I got covid furst part of nov. 2020. Spent a month in hospital/nursing home. Many of my aches and pains have gone away. I exercise 30 min. 4-5 times a week. If I don't then I back slide very quickly.
I play cards
do cross word puzzles
word search puzzles
500 word puzzles
and started interacting soclially (senior citizen center for me)

Still have brain fog. Seems area of long term memory and short term memory have been effected. Start to speak and stop in mid sentence trying to thing of proper word.
Have to stop and think of it, or ask someone, or research it out i.e. dictionary/computer, etc.
needs reilnforcling, but once that is done I don't have as much problem wlith specliflic issure.
I find making a to-do list the day before and/or keeping a daily calender very useful.
I find if I exercise daily I have much more energy, but still get fatigued, thou less so had I not.
PROGREASS IS REALLY SLOW. Still can't do a push-up. So do 5 or so 1/3-1/2 push-up in my regular exercise rutien (spelling - my mind just went blank)
usually spend 4.5 hours to 6.5 hours per day, five days a week, doing recovery activitlies.
I am 70 years old, and retired.
Have basically developed my routine based my initial therapy (could not get out of bed on my owe to go the the bathroom), of about, plus or minus three months.

There must be a better way, Have not consulted any professionals on these procedures except my initilal Therisptist of 90 day period, twice a week sessions.