Hello! I have been following this forum for quite a while now - even way before I started studying for the GMAT.
A little background about me:
Communication major - 3.7 GPA
I work in Marketing for a Tech/IT company
4 years full time work experience
Math has always been my weakness even in high school but i always managed to get a B+ at the very least due to my study habits. I'm mainly worried about the quant section. Currently, i'm in the
MGMAT Interact course. I started studying only 2 weeks ago and I'm following
MGMAT's syllabus. I have taken 2 CATs so far. Results below.
MGMAT CAT 12/30/15 - 490 (Q23, V32) - took this one cold - I have not done any Math (aside from basic computations at work, etc. since high school).
Veritas CAT 1/22/16 - 410 (forgot the %) - Really disappointed and frustrated

I took the 2nd CAT after about a week of reviewing basic quant concepts using
MGMAT Foundations of Math & a bit of FDP strategy guide. I was also very tired that day - not sure if that was any factor. I thought my score would go up even a bit but it went down drastically.
Looking for some advice now. Aside from
MGMAT and OG books, what else do you think are must-have materials that will help me achieve my goal score of 650+? Am I setting the bar for myself too high? I study about 3-4 hours on weeknights and about 4-8 on weekends (it varies).
I have not scheduled to take the GMAT yet but basing from where I am right now, i am planning to take it mid-May. I will go on a family vacation in March for 10 days so i doubt I will be able to do some intense studying at that point and will lose about 1 or 2 weekends from now until May due to prior commitments.
Please help! I feel so discouraged right now.