Hi ... I can relate to when it comes to reading a book ...I too need to go back and re-read what read ....because of racing thoughts. ...tho it's been a while since I picked up a book and after I read Your post I'm wondering if it's the reason why I've been hesitant to pick up a book again
I know I don't have answers to what Your going through but You're not alone ....I do find I'm able to focus on articles on PC homepage especially about issues I can relate to perhaps that might help
Hang in there and please stay safe ....