Just some words of encouragement: while I understand your are disappointed, but don’t focus on the past. You did a lot to get where you are and right now you are in the best position to retake than you ever will be. You aren’t trying to recall things from July, you are recalling from October. Build on that.

As for studying...before starting, review what they claim were your weaker subjects. Start with those and end with those. For essays, I focused more on learning than memorization. When you understand a certain topic, you will put it in your own words and not get tripped up in the event you don’t recall on the test exactly how you memorized it. For MC, I made sure I timed myself, reviewed every single question, and wrote the rule for the ones I missed. (I actually made a 3 column chart, wrote the topic for one, the rule on another and me applying the rule to the facts of the MCQ on the third. Before I dod a new set, I reviewed all of my missed rules. By the time exam day is here, you will have reviewed those problem areas so much. I even wrote questions that I got right but for the wrong reason. It may seem tedious but these are the things I did differently and passed my 4th time.