Break up your class studying (or Anki cards or whatever you do with your time; idk your life) w/ 10 UWorld questions multiple times a day. Then review them immediately after & take notes/make flashcards or whatever.
This is what I've been doing. It's really weird it helps prevent burnout a lot actually. Anytime I'm sick of flashcards I'll just do some UWorld Q's & by the end I'm refreshed & ready to tackle Anki again.
Do this back & fourth w/ some solid music in the background & before you know it you've studied all day & they are kicking you out of Panera.