You do not need to master every model. You need to master the relationship between your models. Let them talk to each other. Let them correct your mistakes. And let them carry you to that glorious "Pass" on your score report.
Read the murmurs chapter in First Aid. Try to memorize "systolic vs diastolic." Take a quiz. Fail. Cry. step 1 models ally
For micro, pharm, and biochem, visual memory models are your best ally. SketchyMedical uses visual mnemonics that turn a list of side effects into a story. However, a model is only an ally if you review it. Pair Sketchy with a spaced repetition system (Anki) like the AnKing deck . Anki is the algorithm that forces your brain to recall those images just before you forget them. Role: The battlefield. You do not need to master every model