Some tips I would like to share for Finals preparation are:
1. Eat well. Your body and brain in particular needs fuel to retain information.
2. Water. Drink plenty of water in the midst of your caffeine intake.
3. Make sure to take breaks in between studying. This gives your brain the opportunity to process the information.
4. Rest. 1-2 hours of sleep is not the minimum that your body needs to function properly. Granted, I do understand that 8 hours might be a tad bit unrealistic given the circumstances but make sure to rest.
Well those are my 4 tips! Have a great weekend and good luck with finals!