Some advice for you on VR that will be very simple changes...
1) Don't highlight. This is a big mistake. You don't need to go back to the passage, and if you do, you have no idea what you'll have to go back to look at when you haven't even read the question. Highlighting takes away from the free flow of reading and you forget a lot by taking frequent short breaks to highlight. It also completely breaks your concentration at many points while reading, because you think "should I highlight this??" all the time. It probably makes you feel comforted while taking the test, highlighting things like a college textbook. However, this trick will definitely sink you if you pull it out on test day (at least for VR). You need to stop highlighting, today.
2) If you are picking the opposite answer frequently, you are falling for the MCAT tricks. We all do it but when taking the tests (AAMC's, at least), you need to get a feel for the typical wrong answer. The most used trick in the book is the "practically direct quote from the passage" answer. The question often asks something like "the author implies that", and the test-taker often still chooses an answer that is mostly a direct quote. If the question asks you to use your own judgment, you will not find the answer in the passage (unless you read the whole thing again). Another common trick is the "most correct but out of scope" answer. When you nail it down to two answers, you need to figure out which one is best supported by passage information, and which one answers the question best. Using these criteria you can often come up with the correct answer. Understand that even the best VR performers of all time never feel completely confident about most of their answers. You must therefore use your judgment, instead of spending too much time going back to the passage. This is why you can't finish in time.
3) Be confident. EK says "be arrogant when you read a VR passage". You have to read the passage as if you are critiquing the author's logic. You need to be confident to do this.
My PS advice for you would be to know and understand the physics formulas. If you google "MCAT physics formulas" you come up with a nice PDF file. You are severely deficient in PS knowledge if you get a 6 on a Kaplan test this late in the game, unfortunately there is little you can do to change that now. Know basic gen chem stuff, most importantly titrations, redox, balancing equations, electrochemical cells, radioactive decay, alpha/beta particles. You need this stuff to do well on almost any PS section for the MCAT.
You absolutely must study for a large chunk of every day for the next week and a half to even have a shot at this. All is not lost, but you need to make up for some lost ground right now.
