I have 2 hours left.Watch this thread
How would you maximize your time?
Study the topics that you find really difficult
Look at model answers to questions
Look at a paper and the mark scheme answers
Idk anything about the subject so the advice I'm going to give you is very general, but simple, just go back over any area you don't feel confident in and skim through all your notes and stuff like that, and anything you don't understand just read again slower, and make sure you know exactly the structure, question types and timing for your test.
Hope this is even mildly useful.