Very little you do on the day will raise your score. A few things can lower it, and most of those are avoidable. That asymmetry is worth planning around.
The night before
Sleep matters more than one more chapter. A tired brain makes exactly the errors NEET punishes: misread questions, arithmetic slips, and decisions to persist with a question long past the point of sense.
If you must revise, revise your own one-page summaries. Do not open a new topic — discovering a gap the night before adds anxiety and cannot be repaired in time.
The first ten minutes
Do not start answering immediately. Read a few questions in your first section to calibrate. Starting with one you can definitely do is worth more than starting with question one.
The first correct answer settles the nerves better than any amount of telling yourself to be calm.
Managing the clock
- Check the time at fixed points — after each section, not constantly.
- If you are behind, do not accelerate. Skip more aggressively instead; rushing produces errors faster than it produces answers.
- Keep the last twenty minutes for flagged questions and for verifying your OMR.
When you hit a wall
Everyone meets a question or a stretch that goes badly. The candidates who handle it well have decided in advance what they will do: flag it, move on, return later.
The damage is rarely the question itself. It is the four minutes of rattled attention afterwards, spent on questions you could otherwise have answered.
The OMR is part of the exam
Fill it as you go, section by section — not at the end, when time is short and hands are unsteady. Check periodically that the question number you are marking matches the one you are answering.
An offset of one, discovered late, is unrecoverable and has nothing to do with how much Biology you know.
What does not help
Discussing the paper between sessions. Comparing answers with anyone. Recalculating a question you have already submitted. None of these can change a mark, and all of them cost attention you still need.