It's smart that you've realised that you need to work hard to do well , you've got one over those who brag about doing only an all night revision session the night before the exam already.
The idea is to put your hopes of a top revision plan into practice. I think everyone tries it but lose motivation and give up as it can get a little boring at times. But there are some people who accept that that realise that's what it takes to do well.
For yourself, I would recommend you really nail down, possibly sacrifice some luxuries for this period . As for work , if you find you struggle with anything ask and find out as quick as possible and get on top of it early , because then itl make life much easier in the long run. Also research and practice exam techniques as well because its always good to put knowledge into practice.
I know it sounds sad and boring but if you want to do yourself justice and realise your potential , then you might as well do it . There's not much to sacrifice really. And at the end of the day you can party so hard and with a dam good reason to as you'll do well!