First of all, thank you for your reply, I'm going to try the tips you've given, and yes I do have a timetable, but most of the time I don't stick to it. Most days, I just see what subjects am I doing that day, and try to finish my lesson plans. But the problem is, I don't finish my lesson plans (bc I try to copy everything down into my notes), and I get discourage the next day bc I feel like I have to finish yesterday's plans and today's plan. By the end of the week, everything just piles up, and I'm behind by 3 days worth of lessons.
I did try to summarise the textbooks (not just copying it) but I felt like the words I'm not writing down on my notes are going to be important, and I'm going to fail my exams if I don't write it down on my notes (bc I'm just using my notes and flashcards to revise).
Where can I get practice questions after I finished a topic? (my exam board is CIE, and I'm doing Maths (AS only), Psy, CS, and Law)
I also tried to do the Cornell notes, but I still don't really understand what the left strip is for.