Two mocks both landing around 590 gives you a read on where you are right now, and the gap to 680 is about 90 points.
One thing worth checking before you build the plan: look at your per-section scores from those mocks, not just the composite. A 590 total can come from very different section splits, and the 90 points you're after will come fastest from wherever you're weakest. You've asked about DI specifically, so let's start there, but make sure DI is actually where your biggest gap is before you pour the most time into it.
On the DI question itself, the answer reframes how you should think about the whole plan. DI feels like its own separate beast, but it really isn't. The section tests the same Quantitative and Verbal concepts you're already studying, just presented in unfamiliar formats: graphs, tables, multi-source prompts, two-part problems. A Graphics Interpretation question is often a percentages or rates problem in disguise. A Multi-Source Reasoning question leans on the same critical reasoning skills you'd use on a Verbal argument. So the single biggest lever for raising your DI score is strengthening your underlying Quant and Verbal mastery. If those foundations are shaky, no amount of DI-specific drilling will make the section click.
That said, DI does have its own recognition patterns, and you can't ignore it. It's a full third of your total score, weighted exactly the same as Quant and Verbal, and treating it as an afterthought is the most common mistake I see. Here's the sequencing that works: build your Quant and Verbal skills first (Data Sufficiency is the exception, since it's really a Quant skill, so study it alongside Quant), and then, in the back half of your prep, layer in dedicated DI work. Learn each question type and its subtypes one at a time, practice them untimed until your accuracy is high and your approach is routine, and only then add timing.
A few DI-specific things that matter on test day. There's no partial credit on multi-part questions. You have to nail every part to get the point, so you need a guessing strategy going in. If a question is built on a weak area or just looks like a tangled mess, make your best guess and move on rather than burning four minutes on it. And never leave a DI question blank. A blank is a guaranteed miss; a guess at least gives you a shot. Estimation is also your friend here. Many DI questions can be reasoned through with approximation rather than precise calculation, which saves real time.
Now the broader method, which applies to all three sections. Work topic by topic. Learn the concepts and techniques for one topic, then practice only that topic until your accuracy is consistently high before moving on. For every question you miss, figure out exactly why: was it a concept you didn't actually know, a misread, a careless slip, or a trap answer you fell for? That diagnosis is what turns practice into improvement. Redo the missed question from scratch a few days later to confirm it stuck. This is how the content becomes automatic, and that depth is what produces both accuracy and speed under pressure.
On the mocks, I'd hold off on burning through more for now. Practice tests are measurement tools, not study tools, and there's a limited supply of good ones. Taking them mid-prep mostly tells you what you already know, that you haven't covered everything yet. Save the rest to gauge progress in the final few weeks.
One note on the timeline. Two months of focused, consistent study can move you meaningfully toward 680, but the closer you get, the more clearly your mocks will tell you whether you're on track. If you're still well short as the date approaches, pushing the test back a few weeks will almost always serve you better than sitting for it underprepared. From there the plan stays the same: keep working topic by topic, keep analyzing every miss, and let the next mock confirm the gains.
This article walks through exactly how to approach DI prep in more detail:
How to Prepare for GMAT Data Insights.
dhruvnatani
Hi, I am targeting a 680 score. How can I increase it by around 90-100 score in 2 months. want to particularly know about the DI section.