notes from textbooks + memory
i just need some more ideas- not flashcards as this is more of an overall knowledge and understanding mock rather than quick facts, so i don't find flashcards very useful.
You could try doing a blurt page where you choose a topic and write as much as you can about it from memory whether this be dates, contextual knowledge or more general info. I know you said not flashcards but I always found Quizlet to be super helpful ~ especially for memorising dates. If you have to write essays you should also refresh or familiarise yourself with what style of question requires. Good luck!!
Not sure of your exam board but you could also take a look at the 2021 assessment materials released this year to students; no mark schemes but you'll see what the questions are like.
If you try a question and can't do it, revisit that section of the course i.e. learn facts, read around topic until confident.
This method helped me, I had my history mock last Tuesday