Find out what topics you're struggling with the most. Go over those topics either with a few friends or your subject teachers. They're there for extra help. Also just keep going over your notes, make cue cards/mind maps/cut your notes done! Do anything that you think will help.
It's okay, there is plenty of time to learn it all! I advise using post-it notes and placing the main points for each section on them. The colours seem to really work for me and breaking down large contents in small chunks is really useful too. I'm also doing this exam and I find remembering the names and dates of researchers the most difficult part, so I'm going to learn the main content first and then go over and over the small details like that. Good luck!
okay so the way i revise is that i learn 4 or 5 sentences at a time by heart and then i repeat them over and over until i can say them really fast and fluently. Then i learn another 5 and repeat them over and over. And then i repeat the ten sentences that ive learnt over and over. and then i use either felt tips or gel pens and write down the 10 sentences in different colour, read them over once more and then write them again once more but this time i time myself