Introduction: Why the Last 90 Days Decide Your UPSC Prelims Rank. With just 90 days left for UPSC Prelims 2026 , your preparation must shift from information gathering to precision execution . Historically, toppers have emphasized that the last three months are about: Revising smartly Solving Previous Year Questions (PYQs) Strengthening weak areas Eliminating guesswork UPSC Prelims is not about how much you studied — it is about how effectively you revise and apply concepts under pressure . 1️⃣ Is It Time to Start with PYQs? (Answer: YES – Immediately) Why PYQs Are the Backbone of UPSC Prelims Strategy UPSC repeats themes (not exact questions) Helps identify important topics in Polity, Economy, Environment Improves elimination skills Builds exam temperament How to Use PYQs in 90 Days 90-Day Revision Formula 60% Time → Revision 30% Time → Mock Tests 10% Time → Current Affairs Consolidation Smart Revision Method Revise from on...