I have been studying for the GMAT in the last 3 months , but when I finally started taking practice CATs in the past 2 weeks my scores have been decreasing, Manhattan CATs: 520, 490, 470. I am confused about what might be going wrong.
In the past 3 months I've covered all 8
Manhattan books, All of the OG 12 Questions(Verbal and Quant), all of the Kaplan 800 Questions(Verbal and Quant), CR PowerScore.
I was planning to take the test in the next 30 days, but not sure if this will happen. I am becoming really discouraged.
Not sure what else to study. I am not seeing any improvement in my score.
Also this is my second attempt at the GMAT. The first GMAT score was pretty dissapointing under 400. I took the GMAT for a first time 1.5 years ago after 3 months of studying with Kaplan online where I completed all of the Topics and homework questions and OG 12. Not sure what else I can do to improve my score. May be business school is not for me

Any advise will be appreciated.