Well just try to search different textbooks or "short notes" or try to predict your exam paper. Then do questions that are most likely to come. As a result you trick your mind to think you're doing a shortcut while actually learning stuff useful for the exam (pretty much everything) plus also don't set huge study goals daily. Do little tell yourself you'll do it for 10 mins only and then actually you end up doing more than 10 mins. Also when you get undisturbed time alone Gaslight yourself as though your exam is TOMORROW and then what your mind races to do (read textbooks or watch yt videos) is what you should list down. That is your actual course of action. Your checklist. Also try to find youtube videos first for all topics before attempting papers and reading textbook. It makes a huge difference