Besides physics, orgo was my favorite class in the pre-reqs. The class really tests your problem solving skills and if you can do reasonably well in the class you will be all set to tackle to orgo on the MCAT. I don't know how others prepared for the class but I can tell you how I approached it.
First off, you're going to come across a lot of reactions, a whole lot of reactions in the class so expect it and embrace it. The course instructor(s) and TFs will advise that you make a reaction sheet (maybe later on in the course when you start learning more reactions) that lists ALL of the reactions and stereochemical/regiochemical outcomes, reagents etc etc. I might have been in the minority but I did not make a reaction list in either semester.
I memorized the reactions by doing problem after problem and really internalizing them without having to rely on a reaction master key as crutch, which you will not be able to use on exams, unlike physics. Months after the class I can still remember a whole lot of reactions and curved-arrow mechanisms because I tried my best to internalize them with minimal rote-memorization. Remember back in physics -- even though you had all of the equations handy, everyone did, but everyone didn't do well because they didn't understand how to use the equations. It's the same with orgo, you need to understand what's going on.
Put away the textbook and spend your time doing problems. Here are some things I did on a weekly basis and to prepare for exams:
After Thursday's lecture, on Friday/Saturday/Sunday I would attempt all of the practice problems (all 20 pages of them) while using the annotated lecture notes. I got many of the problems wrong in my first pass. But it was important to me to at least attempt them by the end of the weekend.
I don't know if the new head TF does this, but the previous head TF used to post the blank lecture slides for Monday review around 2pm or so; I would try to solve all of the problems BEFORE going to Monday review. A lot of the time I would get the problems wrong because I missed a tricky step or I just plain didn't understand it. I found that if I attempted the problems before going to review I would pick up on the little tricks that are really important.
By the time Tuesday/Wednesday section comes, I would be relatively prepared to tackle the problems and do the homework. The p-sets in orgo were extremely difficult for me and I would say I needed to collaborate/get help to do all of the problem sets. Some of the problems in the p-set are straight up way above exam-level status. The box problems in p-sets are very, very good though.
For exams -- I would start preparing very early. Right after the lecture that covered the last lecture that was gonna be on the exam. Usually this means starting to prepare for exams 2 weeks before the exam.
First I would re-print blank lecture slides for all of the lectures on the exam and I would attempt every box problem, curved arrow mechanism and synthesis that the professor did in class. I wouldn't use the annotated lecture notes to do them, if I couldn't do them on my own I marked that I got it wrong on my error log.
After re-doing the lecture problems I would re-do all of the pertinent practice problems, marking every problem I got wrong on my error log. After re-doing the practice problems I would re-do all of the Monday review problems. After re-doing all of the Monday review problems I re-did all of the problem sets.
By this time, after re-doing every assigned problem for the first time I racked up a ton of problems that I got wrong. I would attempt the problems a second time while checking off problems that I got right, then I would go through my list a third time and hopefully by the third pass I would have gotten all of the problems right on my own without notes.
Finally after doing the assigned problems, I would do the practice exams last (usually starting 2-3 days before the exam). In the last few days I would just focus on the exams. I would re-do them and re-do them until they became second nature to me. There were practice exams where I would get 90+ (I scored myself, probably too generously) the first time around but I would re-do the whole exam until I internalized the concepts. I remember some practice exams I would get 95+ after the second pass I would re-do it a third time so I would get all of the problems correct. I re-did problems over and over up to the point where on the actual exam I would see a problem and I would immediately "see" what the trick was even though it was a completely different problem -- the underlying concept was there and I would immediately catch it, it's a very rewarding feeling being able to see a multi-step synthesis in a matter of seconds.
I don't know how much time you have to commit to the class but this is what I did on a weekly basis and it worked for me. I probably went over-board but I have no regrets. Everyone studies for orgo differently and as cliche as it is -- you need to figure out what works for you.
Best of luck to you in Orgo. It's gonna be quite a ride
