The good news is that YOU WILL PASS!
My advice is this:
Go Thru each section in the sweat book one-at-a-time, not only to memorize, but be sure to understand the concepts inside AND out, up AND down, AND sideways. Of course, you need to memorize names of drugs, dosages, etc. but it's paramount to have a good understanding of the concepts. Also, go thru the latest mixed reviews a couple of times and at least once more thru the memory master - again, to master concepts as well as memorization...
I recommend 8 hours per day, with 2 fifteen min breaks and 45 min for lunch (seriously, just like a job) for at least three weeks, more if you think you need it...and remember, no shortcuts - just do it!
When you take the test again, read the question and form your own answer first, then look at the choices to see what fits. This is how a friend and I did it (on the advice of several other CRNAs).
Good luck to you bro, and keep you head up...