I'm doing mister pip tomarrow, and I'm just concentrating now on reading through the mindmaps I made on the main characters and themes in the book, also it's handy to memorise a few general quotes as it gives you more time in the exam. I also just wrote some notes on general exam technique. My advice: make sure you know how to structure your answer and what to write. here's a link to the notes I made : http://getrevising.co.uk/resources/last_minute_tips_for_english_lit_exam_aqa
hope this helps you and good luck for your exam tomarrow. What grade are you aiming for? I need at least a B but ideally a A as I'm doing english lit/lang for A level.