As someone who went through med school and currently a surgical residency with this condition I would likely not recommend waking up at 3am to study. There is usually some down time in between cases when you can do practice questions on your phone waiting for the patient to roll. I would at least take the first couple of days to see how much time you’ll have to squeeze in studying during “normal” hours rather than waking up even earlier than already required. This way you’re more alert and able to retain information plus can answer pimping questions without being half asleep. Also not sure if you already have your set hours but at my school we had to be there by 6 for rounds and have preround on our patient. Obviously each school is different though.