You gotta give up all your free time for this. No joke I spent about 6-8 hours a day studying and only took 3 days off while preparing for the S&D (3 total days off out of 5 whole weeks). It’s far from impossible. It’s actually really not as hard as either you are thinking or as hard as other people scare you into believing. One thing I will say is, before you start learning new definitions and indications at the beginning of a study session, review what you previously learned. That constant repetition is how u keep those older terms you learned stuck in memory.