When I was studying I would go back at the beginning of each study session and re-review my mnemonics for the audit standards, elements of internal control and elements of control environment.
Have the standard audit report basically memorized, and know when to qualify it or when to just add additional wording into the report, and into which paragraph. I made up mnemonics for the “main concept” of each sentence in the report to help memorize it.
Understand the various types of testing (substantive, etc) and be able to identify what type of test something would be if given a example.
Regarding the IT and FAR stuff, if you've already passed those sections I think that 20 minutes of brief review the day before the test to re-familiarize yourself should be plenty, unless you found those to be serious weak areas in the past. I wouldn't worry too terribly much about those (well, maybe give IT a half hour on its own).
I did cover all the material in the book (barely) but the items above that I did mnemonics on were what nailed it for me. I got into the exam room, wrote down every mnemonic I could think of and then referred to them constantly while doing my MCQ on the test.
AUD - 92
FAR - 73, 82
REG - 72, 82
BEC - 84 DONE!!!!!! 🙂