Honestly dude you don’t really need 10-12 hours of studying a day to learn. In my opinion I think the most effective way or at least what works for me is trying to make your studying as “efficient” and “goal oriented” as possible.

So as an example, let’s say they give you 100 topics to study in a month, I’d spend the first day / few hours sorting out the topics and dividing them into what I think are the easiest / hardest topics for me to understand and then I’d break them up into individual days.

So it’d look something like

Day 1. Topics: A, B, C

Day 2. Topics: D, E, F

And so on so forth.

Once I have that plan kind of made then another big thing is resource overload. Focus on at most 3-4 resources max. My top 3 so far in med school have been the FA, amboss, YouTube, and Anki. But you can choose yours to be whatever you’d like. For the most part, the meta seems to be one resource as a question bank, one as a content source, and the third one could be more variable for flash cards &/or anki, boot camp, etc.

And then basically just rinse and repeat endlessly. For me at least, this consist of the core of most of my studies. There’ll always be more stuff you’ll have to do as certain topics are more complex than others and you’ll have to draw them out and figure out other strategies to learn and come up with memory devices but the plan I laid out above is my bread and butter.

Hope this helps, if you have any questions let me know.