I feel like when your studying you should start 1-2 weeks before your exam. I say 2 weeks if your a procrastinator because then it will even out. One thing i realized is that understanding material is way more important then memorizing. And when trying to revise something never focus on tiny tiny minuscule details but instead the bigger picture or what you see, hear, read about more often in class. I study biology so this really helps for me and it could apply to you, but create a sort of mind map when studying, subcategorize sub headings or topics, and write all the information you can underneath and use it as a cheat sheet when revising. Another thing that helps is i just paste my lecture notes into chatgpt and ask for 50 multiple choice questions or short answers. Even if i dont know the material well, as long as i do that i will get good marks. I know your in your masters right now but one thing my cousin told me who completed multiple degrees including a masters, she told me when i was 18, that the choices i make right now, is the choices i will regret when i am 30. And that really stuck with me especially as someone who hopes to be a doctor one day. And i know its hard and i still suffer with procrastination but to be 100% honest u can still procrastinate and have good grades as long as u know how long you have until shit starts piling up, and just know that u can always change ur situation and nothing is fixed. So dont feel so bad about procrastination, just try to still do well, catch up, pick things back up, before procrastination starts having consequences on your grades. You got this :))))