Are you able to understand the subject?
Are you able to read and write about the topic?
If yes, to any of these questions, study
Any difficulties discuss with your tutor or classmate
There are bad days for sure. But even then there are tasks you can accomplish without skipping something. Don’t skip; make a deal; trade some of your future results if you need for sone results here and now.
I’ve been there. My mind keeps telling me that the best way to spend some time is to sleep or watch Riverdale. Instead I look into my to do list and do something before I allow myself to relax; and no, I try not to sleep when I’m not supposed to.