I've left everything way too late, I am going to have to study solidly for next 17 hours before the exam, taking hopefully 3 hours sleep to keep my mind sharp.
Please share your experiences of last minute cramming
I've always done last minute cramming - never could study staggered like a "proper student".
It's hard to generalize, but if you have access to past exam papers, go through 2 or 3 or them and pick out the questions that were repeated and definitely study those. Or at least see if you can spot the main topics / chapters that the focus was on. If you don't have past exam papers, no worries - pick a few choice topics / chapters that your professor said were important and study them well. And skim through the rest. You can't learn or memorize everything in the last few hours before the exam, so don't even try it, lol!
Just make sure you really know the stuff you chose to study and hope for the best. Depending on the subject, you can even do great as long as you write decently. Good luck and DON'T STRESS - there's always next time when you can make up for it