I was in the exact same boat with DI about three weeks before my exam (scored 725, so this approach worked). Here's what turned it around for me:
For Two-Way Analysis and MSR specifically, the issue isn't usually comprehension—it's organization. Start using a simple annotation system: I'd write "S1: X>Y" or "Tab2: 40%" in the margins of my scratch paper before even looking at questions. Externalizing the info reduced the cognitive load massively.
For time management, I stopped trying to read everything perfectly. DI rewards strategic skimming. Read the question first, then find only the relevant data. Most MSR questions only use 2 of the 3 tabs—don't waste 45 seconds reading the third one.
One tactical thing that helped: I practiced 10 DI questions in a row with a 22-minute timer (not per-question timing). This forced me to triage and move on when stuck, which is the actual exam skill.
The OG 2024 is solid for practice. Keep grinding those, but focus on post-question review: "Which tab did I not need? What could I have skipped?" That pattern recognition matters more than doing 100 questions.
You've got this—three weeks is plenty of time to turn DI into a strength.