Bless you. I felt like that last year after Covid in August. Rest is healing with Covid. I recommend to do a little something....lie down....do a little something...lie down. If you have to nap during the day, it's ok. I simply could not find my words right after Covid. I think this lasted about 3 months. I knew others were battling the same thing at the time and it helped to talk about it with them and we laughed about it. I was leaving a message on the phone with the doctor's office and I couldn't remember the word "contagious" to save my ife. I was trying to say, I am no longer "contagious", but, it wouldn't come. I just blurted out on the recorded message, bear with me, I have "Covid Brain". Then the word came. Yes, it's embarrassing, but, it got better and better as the days went on. But, when you are in the fatigue and mental fog it feels like its there forever doesn't it? It takes time and rest. Praying for you right now.