I think the most important thing for any exam, torts especially is to keep your thoughts organized.
I recall that when preparing for my torts exam, it was most efficient to read the exam for individual torts, and then address them element by element, applying IRAC religiously. My rule would be all of the elements of the tort, and any specific issues for each of those elements raised by the fact pattern.
Also, if you use headings and subheadings, you can refer back to rules that you previously stated. That will save you the time of writing things out twice.