IT placement aptitude tests are usually the first filter in a campus or off-campus hiring drive, and they're designed to be cleared under time pressure, not deep subject expertise. That means your preparation should optimize for speed and accuracy on a known set of topics, not for depth on any one of them.
Start with a diagnostic
Before you build a study plan, take one timed mock across Quantitative Aptitude, Logical Reasoning and Verbal Ability. Your accuracy and time-per-question data will tell you far more about where to focus than guessing based on how a topic 'feels'.
Build topic-wise speed, then combine
Spend the first two to three weeks on focused, topic-wise practice — percentages, profit & loss, and time-speed-distance in Quant; series and coding-decoding in Logical Reasoning; reading comprehension and grammar in Verbal. Only move to full timed sectional tests once you can solve topic-wise questions comfortably under time pressure.
Practice under real exam conditions
In the final one to two weeks, switch almost entirely to full-length timed tests that mirror the actual test format — including negative marking if the exam you're targeting uses it. Review every mock in detail: which questions cost you the most time relative to their difficulty, and which topics still cause hesitation.
Common mistake to avoid
Don't spend disproportionate time on your weakest topic at the expense of consolidating topics you're already close to mastering — in a timed test, small consistent gains across many topics usually beat a single topic pushed from weak to strong.