With registration done, you have roughly five months to the February 2027 papers. That’s tight-but-sufficient for a serious CSE attempt if the plan respects two truths: weightage decides priorities, and PYQs are the actual syllabus.
The subject order (by historical weightage + leverage)
- Engineering Mathematics + Discrete Maths — consistently heavy and score-friendly; also underlies everything else.
- Programming & Data Structures, Algorithms — core weightage, and your placement prep already overlaps it.
- Operating Systems, DBMS, Computer Networks — the applied trio; concept-dense, PYQ-friendly.
- COA, Theory of Computation, Compiler Design — respect TOC/COA (regular marks); compilers is compact and formula-friendly.
- General Aptitude — 15 marks of near-free scoring; 20 minutes daily from December.
The month map
- Sep–Oct: first pass of subjects 1-3 with standard notes + immediate topic-wise PYQs (solve after each topic, not "later" — PYQs teach the exam’s actual asking style).
- Nov: subjects 4-5 first pass; keep 30% of time revising earlier subjects via PYQ re-solves. Your semester exams land here — plan the overlap honestly (GATE subjects double as university subjects; prepare them once, deeply).
- Dec: full-syllabus PYQ years under time + a test series begins — one full mock weekly, error-log religiously (concept gaps vs silly errors vs time sinks).
- Jan: mocks twice weekly, weak-topic surgery from the error log, formula/short-notes revision cycles. Nothing new after mid-Jan.
The three rules that decide ranks
PYQ-first (a topic isn’t done until its last-10-years questions fall), error-log always (mocks without autopsy are entertainment), and consistency over heroics — 3-4 honest daily hours beats weekend binges, especially alongside final-year load. Virtual calculator practice from day one of mocks; NAT questions punish calculator fumbling.
Whether you’re all-in or hedging with placements, the decision framework helps you allocate; either way, these five months of CS fundamentals repay you at every technical interview you’ll ever face.