It sounds like you've been making some good progress - that's great.
You've still got a roadblock on your overall mindset though and that's going to continue to frustrate you until you fix it. Read this. If you have already read it, read it again. And again:
https://www.manhattangmat.com/blog/inde ... lly-tests/As long as you continue to try to take the test as though your main goal is to get everything right, you will continue to take too long on some questions and you will run out of time at the end of the section. Then your score will go down.
The test is purposely TRYING to put you in a situation where you don't have enough time. You CANNOT get good enough that you will not have timing issues! They are actually testing you on how well you react to limited time! Can you cut yourself off and move on? They WANT you to do this.
I'm going to repeat something I said in my last post:
Ideally, though, you want to be doing this [guessing quickly on some questions] throughout the section, so that you don't have to skip a bunch of questions in a row. Choose the hardest ones that you see throughout (based both on the wording of what you're reading and your knowledge of your own strengths and weaknesses) so that you can mostly keep yourself on time.
So, no, don't guess on one entire RC passage - that's too many questions in a row. Guess on the hardest questions, of any type, as you see them throughout the entire section. STOP trying to get everything right!
You ask whether you can guess on 4 questions in a row and still hit 45 on verbal. First, I have to point out that 45 on verbal is the 99th percentile. Literally only 1% of test takers score that high or higher on verbal. So, no, you can't get 4 questions wrong in a row and still score in the 99th percentile on verbal. You don't need a score that high though. No school is going to reject you if your verbal is "only" 90th, or even 80th, percentile.
The pattern you are seeing on our tests is generally how things are going to work on the real test - your score will drop if you have a bunch of questions wrong in a row or a higher proportion of questions wrong than normal in a string of questions. If you run out of time with a bunch of questions left at the end, your score will drop a lot.
Because you are struggling most with real-GMAT-SC questions, try to study from real questions as much as possible. Your goal here is not to do a bunch of new questions. Your goal is to take the existing questions and really study / pick them apart until you understand how they constructed the problem, how they made it hard, how they got you to fall into a trap.
Read this:
http://www.manhattangmat.com/blog/index ... -the-gmat/That's what you're trying to learn at this stage.
So go back over old OG and GMATPrep questions. Don't forget about the free questions in GMATPrep. You can also buy a question pack that contains about 200 verbal and 200 quant questions - this is through GMATPrep and you'll view the questions in that software.
But don't just start doing a bunch of new questions. Learn HOW to do this on questions you've already done first, even if it takes you half an hour per question to fully analyze and pull it apart. Until you know how these work, you're just going to keep struggling with new questions.
For CR and RC, same general process. :)
Here are some resources on CR:
https://www.manhattangmat.com/blog/inde ... reasoning/For RC, I just submitted an article today that's like the above CR article, but for RC. Check our blog next week - I'm not sure which day it's going to be published. (I think it's going to be published on Beat the GMAT sometime earlier in the week - maybe Tue.)
Finally, but most importantly, you are stressing yourself out and that's going to make it harder for you to hit your goal. A 750 is the 98th percentile - only 2 percent of testers will score that high or higher. No school on the planet requires a 750+ score. (And if the rest of your application isn't good enough, then scoring 750+ will NOT get you in!)
Read this:
https://www.manhattangmat.com/blog/inde ... es-update/And consider doing some meditation to help calm your thoughts so that you can perform better on test day:
https://www.manhattangmat.com/blog/inde ... mat-score/