I've been trying to master this topic for almost a month now and have yet to fully grasp the concept. Its not the math part, I just don't like the question type. Any pointers on how to get a full understanding for test purposes. I take the exam in 3 months.
Your situation is very common among people preparing for the GMAT. The truth of the matter is that EVERYONE struggles with Data Sufficiency (DS) questions at first. Keep in mind that this question type is unique to the GMAT, so it's totally foreign territory.
It just takes time for the concepts and strategies to become secondary, at which point you may come to find that DS questions are actually easier than Problem Solving questions.
I could start listing dozens of DS strategies and common mistakes (like confusing the answer to sufficiency question to the answer to the target question), but it's easier to just direct you to our free set of 16 videos that cover everything you need to know to tackle DS questions: https://www.gmatprepnow.com/module/gmat-data-sufficiency
Cheers,
Brent

















