The sleepiness and fatigue especially.
I have to adhere to a strong structure because I lose track of how I always cooked for instance, or connected the dots to accomplish household tasks. My brain gets foggy when I am required to really concentrate for a long time. Mayo Clinic specialists directed me to be active for an hour at most & then on purpose take a brain rest.....be blank for a minimum of 5 minutes, and occasionally 20min, throughout the day. I am particularly careful about driving for errands and am exhausted when I get back home.
My digestive system is sensitive to this stress and I take an anti diarrhea a half hour before going out to a social event with my husband. All of this is in addition to a whole list of long Covid typical symptoms,including no taste/smell since my infection February 2020.
BUT, here I still am by golly!,

@bettyjackson I feel for you. I too am a Long COVID sufferer that has gone through the Mayo program. I am at about 3-1/2 months and feeling better. Sounds like you are practicing moderation which is core to the Mayo approach to get the Central Nervous System back under control. I too am following moderation and one of my plan elements is limiting my exercise. Where I once was at 45 minutes aerobic (cardio and resistance exercises) 6 times a week, I am now limited to 10 minutes elliptical (aimed at leg strength, not cardio), 6 push ups and 6 squats! Quite a throttle back and I have to really hold myself back because I am a Type A personality. I want to fix it, now!

For your fog, are you trying any supplements? One of the better ones recommended is magnesium which I take at night because it also helps you sleep. Warning though, magnesium is challenging to the digestive system. I also take/have taken prescriptions directed by Mayo and other supplements. Best wished in your journey and keep driving to a better place!