I am an expert, and I also recommend taking it easy in the last few days. How many earth shattering new techniques are you realistically going to learn and internalize in the last couple of days? None really. Best to relax and recharge your batteries.
I understand that doing no prep is out of the question. You're going to do a little something no matter what I suggest, so here is what I think you SHOULD do. Take the work that you have already completed and browse through it. You have already learned those concepts so nothing should catch you by surprise. Also, those pages contain learning moments that it is useful for you to relive.
It's low-stress, no-surprises prep. Enjoy
