1.
go through flashcards for a topic ( make sure you genuinely understand everything)
2.
the next day do a topic pack and mark it harshly ( go over any mistakes and check if its lack of understanding or silly mistake)
3.
repeat until you're confident on question types and familiar with the style of the mark scheme
4.
do a past paper (no point in doing past papers until you've gone through every single flashcard multiple times)
5.
mark it harshly and go over any specific topics you struggled with and watch videos/redo the flashcards on it
6.
do topic questions on your weakest part from the past paper
7.
and then basically repeat steps 4-6