I was prescribed modafinil earlier this year and it worked well when I took it but it was intense at the useful dose so the doctor put in for a sleep study. It was a 3 month wait but I am finally getting it done next week an I'm hopeful it leads to a conclusive diagnosis.

I also noticed my issues were worse after my 3rd bout of covid :-/ I had very high sensitivity to alcohol and caffeine after the 2nd bout and have largely cut both out of my life (I never drank more than 20 drinks / year in my life anyway).