Step 1: Don't panic. It won't help. Better to just take a deep breath and enjoy the hum of the freight train as it steadily and inexorably rolls in your direction.
Step 2: Ignore Gyric. While true that being a good resident is your best single weapon for the exam (particularly AP), there is a huge body of information the test draws on, and much of it is not covered well or at all in residency (particularly CP). Unless you are hyperthymestic and have spent the last 3.5 years reading Henry's every night, you will need to study for this thing. Like it or not, the failure rate is uncomfortably high, the failure rate on retakes is even worse, and the cost of failure is exorbitant in terms of money, time, and anxiety about future employment.
Step 3: Everyone who went before me told me to pick a few resources and stick with them. I absolutely agree. You can't know it all, so don't try.
AP: Second half of Robbins is good, as is the Wash U Manual. Lefkowitch for questions. Cibas for cyto. Do the Osler lectures, and repeat the ones you like. Look over whatever remembrances you can to get some idea of what the boards considers testable points.
CP: Quick Compendium (I like the first edition better than the second). Clinical Laboratory Science Review for questions. Do the Osler lectures; micro is particularly helpful, with the exception of parasitology. CAP's Color Atlas of Hematology is good.
Step 4: Put yourself on a schedule, but still have some fun on occasion. No sense in burning out before you even make it to Tampa.
Step 5: Don't listen to this: