I'm pretty sure we had covid in March 2020, and my wife has since then been extremely tired - like needs a 2 hour nap every afternoon and in bed by 8pm - and br

I'm pretty sure we had covid in March 2020, and my wife has since then been extremely tired - like needs a 2 hour nap every afternoon and in bed by 8pm - and brain foggy. She's had concussions in the past, so I haven't been sure when one brain fog ended and the other fog started, but I do wonder if it's post-covid related. I just don't know what to do about it though. Doctors are finding nothing.