One of the most common mistakes people make when they start medical school is to suddenly change the way they study right out of the gate...which is usually foolish, since in order to get into medical school it means people have to have already found methods that already work for them. Medical school isn't much more difficult in terms of content but rather a drastic increase in volume. So I'd recommend that you at least start out by sticking to the study strategies that served you well in the past, so long as it's something you can keep up with. It's only when those previously-proven strategies fail you that you should revamp your approach....and usually it's better to tweak and revise strategies rather than starting from scratch.
That means if flashcards are a proven method for you, try them in medical school. Flashcards are one of those study tools that just either really work or really don't work for people. With med school there could be a problem in terms of shear volume. So f you can't keep up with making them, there are premade flashcards out there and you can also be pickier about what you put on flashcards. E.g. material you still need to learn in the last week or so rather than an entire block, since a lot of the material that seems tough in the beginning will be obvious/learned when it comes time to study for an exam. I'm not a flashcard person but I'm one of those people who learns from writing/rewriting, and what I ended up settling on was reading through lectures a few times for comprehension and then taking notes on important points and concepts I still didn't quite have the hang of (or kept forgetting). It was a way to adapt my proven strategy to the volume of material I had to cover (without rewriting Harrisons and Robbins). Good luck!
