GMAT Prep Burnout? [merged]

Hi, Thank you very much for asking, here are my answeres:
1) How long have you been studying?--> I started around Sept 10
2) What materials have you been using?--> OG and MGMAT, 99RC, CR Bible Aristotle
3) How have you scored on each of your practice CATs (including the Quant and Verbal Scaled Scores)?--> Maybe, I am trying to excuse myself but with the very first CAT I got 470 because I did not touch Math for a long time. I did the first test to see where I was at the beginning. After that, I reviewed only Quant for a month (averagely 1 hour a day because I am a full time senior student) and got 530 on my 2nd CAT. Then I started to review for only Verbal around 10 days and wanted to Take CAT 3 to see how was my progress. During this 10 days I did not spend much time reviewing Verbal (not touch Quant at all) because all of my projects are due at school. I got burnt out yesterday doing CAT 3 and I did no question right in the first 20 Quant questions so I stopped and cried.

4) When are you planning to take the GMAT?--> At first, I booked my exam on Oct 23 (last month) then, it was too much so I delay it till this Nov 23, another 10 days.
5) What are your application deadlines?--> the schools that I want to get into have different deadline.
a. First Uni: - November 15, 2015
January 10, 2016
May 1, 2016
June 1, 2016

b. Second Uni: Jan 15: Early Deadline.
March 31: Final Deadline.
With two Uni, I need to get at least 640 to be safe as their averages GMAT posted are 640 ( I have a pretty good GPA:3.8 and Got strong recommendation letters).

I do not know what to do right now. I am debating to see should I delay my test again or just take the test and if it is not good just cancel the score to get the feeling of test. However, I just need to get it done. GMAT becomes a burden to me right now.
I am good at Math but not this type of Math in GMAT where time creates a lot of stress on me and I can't focus doing it because I am stress.

Please give me advice and Should i take my GMAT this Nov 23? What should I do?...I am still a full time student next Spring:(