Agree with vikramjit_01.
A month of focused effort can get to your target score.
First you need to come up with the strategy and study plan though.
Your verbal score is already in target range. You will need significant improvement on quantative side.
My suggestion is to focus primarily on quantative questions while maintaining or slightly improving your verbal performance.
GMAT has a fixed set of math concepts (e.g., number properties, ratios, percentages, geometry...etc). You need to familar with those. Beyond that is just practice, practice and practice. Track your hit percentages on each category. DS questions are special for GMAT and can be tricky - the key is to learn the techniques and apply the math concepts.
You may want to consider taking GMAT classes especially for math.
Good luck and your goal is very reacheable!