Hi anon,
To repeat a cliche, Rome was not built in a day. There's no need to be depressed so relatively early I the prep process. People have been known to devote more than a year to achieve GMAT dream targets.
However, I do agree with the previous posters that you might need to revisit fundamentals in both Quant and Verbal. The
MGMAT books can serve you well there. To see real improvements, you need to start from basics and build from there. There are myriads of other resources on the forum that you can easily search for. Most importantly, you need to draw a study plan that fits your goals and preparation needs. In addition, you should speak to someone to decide on how realistic your schedule is and take it from that point.
All the best as you work your way up.
Cheers,
Der alte Fritz.
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