Hi layiwolo,
I’m glad you reached out, and I’m happy to help. Although I don’t know much about how you have been studying, the fact that you are currently at Q37 (9 points off your score goal), is a sign that you have numerous weak areas that need to be addressed in order for you to hit your score goal. Meanwhile, since there is no way to predict what quant topics you may see on test day, I’d say it’s important to improve in all of GMAT quant, rather than just stick to certain topics. Remember, part of the difficulty of the GMAT is the fact that so few quant questions are asked (only 31), but so many concepts can be tested. Thus, to be successful on the GMAT, and to achieve a quant score in the mid 40s, you must know ANY quant topic that could be thrown your way on test day. So, if you find that you need more time, I’d suggest pushing your GMAT to a later date and taking it when you are truly ready to do so.