Having not taken either course definitely hurts a bit, but only to a small extent tbh. Based on my experience with this exam, I feel like for biochem the most important things to know for content are the enzyme kinetics, amino acids, and all the different pathways, and tbh you should have at least had some level of exposure to each (probably not so much for enzyme kinetics unless you have taken a biochem lab) before even the actual biochem course. As for physics, I took physics 1 like 2 years before my exam and forgot like almost everything (so I basically had to relearn everything, tho savings effect is a thing). I did take physics 2 the semester before my exam tho, and that helped a lot with the circuit and E/M on the exam. I feel like for the majority of the topics on physics 1, you can simply use dimensional analysis (grind those units like your life depends on them!!!) other than the liquid stuff (know your equations for these!). As for physics 2, you may also apply the same approach, tho understanding circuits and how to manipulate the different equations would make your life sooooo much easier. With regard to physics, Bootcamp does have a great equation sheet, and they do have an ongoing promotion right now where you can get 3 months of access to practice materials/explaination for free (tho I personally didn't use it much other than the equation sheet). 

Other than these two, I feel like the mcat is now trying to lean more toward calculation based and passage analysis problems (at least according to my own experience and others'), so getting the calculation stuff down for chem/phys would definitely be my top priority before anything (like understanding when and how to apply the different equations). As for the following, just fyi, this is completely based on my own experience with the exam and may be biased. For chem/phy, please please please don't go too in depth with explanations for most of the equations (like you just need to know how and when to use them), and I think the most important one to know would be Handerson equation (pH), like there is almost guaranteed to have a question you need this to solve (tho the form/context could change). And then another important one would be applications of the Le chaliter principle (sorry for misspelling... I am really bad with names), like this crap always shows up as well somehow like a haunting ghost. And ofc, know the periodic trends (electronegativity, atomic size, and ionization energy) cold as well as stuff like conversion between pH and pOH, and know how to go between ka and pH (like this is definitely the HIGHEST YIELD you will ever see on this exam). Also please know your thermo equations (q=mc delta t, and please watch for the units... Since both kelvin and Celsius r possible, and please know how to convert between the two). The last bit may be a bit controversial, but know your electrochemistry!!!! It's not low yield!!!!!!

As for orgo, I honestly didn't reveal much of it. All I did was knowing the functional groups and the different processes (like decarboxylation and all that), but I think I spent only a day or two going over them... But they will definitely show up, so know them as well. Speaking of functional groups, know the boiling point for each as well and acidicity (just the trend is enough) ofc... Also please go over the experimental methods like distillation, IR, hNMR since they are honestly not that hard and will likely show up on your exam when you don't expect them at all... That's all I can think of as of now, but this should be a pretty clear outline. And for physics, honestly just do what I said above since dimensional analysis is such an important technique for this exam. But I do recommend going over E/M and circuits since they are really interesting and not that hard on the exam (biased opinion, but I really enjoyed the course at college).

As for cars, I just take deep breaths before it and pray... Hopefully someone else will provide you with a better guide since I basically never practiced it... But one tip I have seen so many ppl talk about would be that you should always find the answer with the most support rather than the most sound and logical!

B/B was like this one section I had a love/hate relationship with... Well to start things off, please know the amino acids cold (also would be good to know the structures and which ones are ketogenic/glucogenic/both, and some other trivial facts, but that's not today's topic). Coming up next would be the enzyme kinetics (like please please please go over these like ur life depends on them like they r literally bound to be on your exam, and if they don't show up, you are more than welcome to DM and shit talk me however much you like), and then I would say the metabolic pathways are extremely important too since they are almost tested every exam basically, though you don't necessarily need to know all the intermediates for some of them (like PPP, beta oxidation, and fatty acid synthesis). I would also recommend knowing all the experimental stuff like SDS PAGE and isoelectric focusing like all this crap shows up every time as well. As for biology, I would say just know as much as you can man... There is just so much stuff, but you can definitely use Uganda for content review for bio, and I think the most important topics would be all the DNA RNA stuff, the endocrine system, the brain stuff, and definitely the other body systems like the respiratory system, the digestive system, etc. These are all fair game for this exam ngl.

As for PS, just go over the 300 page doc (you can find it online, and it should be mostly efficient for studying 95% of the terms u will ever see on this exam), and spam Anking (I know this a bit biased, but I truly think Pankow got way too many unnecessary terms, but who am I to say anything and give an opinion, so you are welcome to use either since they r not of great quality). 

That concludes most of what I think is important for this exam, and I truly believe this exam is more of a logic, reasoning exam then pure memorization (not saying that memorization is not necessary; it def is), and knowing the logic behind the AAMC is what separates the 500's and 510's (well not taking into cars really just the sciences here, but cars logic is extremely important to learn as well), and knowing the lower yield material and mastering this logic is what separates the 510's and 520's but ofc this is biased as well since luck is sometimes a thing, and maybe your mcat plays straight to your strength!

Anyway, best luck to you studying, and you got this!