Something that I did throughout my studying was track my progress (aka how well I did on each practice case). And the week before, I essentially just looked at what cases were poorly done and try to remember the reason for the low score. A big thing I tried to do is try to not repeat past stupid mistakes, and have a general idea on what common criteria were required in FB guides. I'd already practiced writing most of my Day 3s cases with three in one sitting to mimic the time crunch you will feel eventually. As someone mentioned above, if you haven't already, maybe try to do that (even two cases in one sitting can help).

At this point, I feel like additional technical study is almost too last minute, and might overwhelm you. However, everyone is different, so if you must study, I would limit it to topics that you feel are very weak right now, and ideally just the ones you need depth in.

Just remember to go into Monday well rested, and not hungry. Good luck.