The last 48 hours don't add knowledge. They stabilise the knowledge you already have. Get this window wrong and you can lose 15% of your ability to recall under pressure — regardless of how well you knew the material two weeks earlier.
Here's what actually works, sourced from what I see my top students do year after year.
T-48 hours (Friday, if the exam is Monday)
Morning: One full past paper, under time, in silent conditions. Then mark it slowly, reading every mark-scheme comment.
Afternoon: Rest. Genuinely rest. A walk, a nap, food. No maths.
Evening: 45 minutes MAX with the formula sheet. Cover the RHS of each identity or formula, write it from memory, check.
T-24 hours (Sunday)
Morning: One easy paper — pick a topic you're strong on. This is confidence building, not learning.
Afternoon: The final formula-sheet pass. Anything you still get wrong, write on an index card and keep in your pocket.
Evening: NO MATHS. Lay out clothes, calculator, spare pens, ID card. Set two alarms. In bed by 22:30.
The morning of
Wake time: at least 90 minutes before you need to leave. This gives your prefrontal cortex time to boot up.
Breakfast: complex carbs + protein (oats, eggs, banana). Avoid sugar spikes — they cause a 10:30 crash right in the middle of the paper.
Water: bottle to the exam room if allowed.
30 minutes before the paper: the index cards from Sunday. That's it. No new material.
What NOT to do
Do not learn new topics. Every hour spent on a topic you didn't know before is an hour lost from stabilising what you did know.
Do not compare with friends. They will claim, on the morning of, to have solved every past paper twice. They haven't. Ignore them.
Do not caffeinate at 6 am. Your baseline is already elevated. Extra caffeine causes shakes in a 3-hour paper.
Do not stay up "just to finish this one topic". Sleep improves recall by 15-30%. That's more than any topic revision.
Between two papers (if applicable)
If Paper 1 was Monday and Paper 2 is Thursday:
- Monday evening: brief mental review of Paper 1 (max 20 minutes), then rest.
- Tuesday: full recovery day. One easy paper if you must — but rest is more valuable.
- Wednesday: same structure as T-24 above.
Do NOT re-mark Paper 1 in detail on Monday evening. You cannot change it. All you'll do is worry about the questions that went wrong and drag that worry into Paper 2.
The morning-of mindset
Two sentences to say aloud in the mirror:
1. "I know more than I need to. I just have to access it cleanly."
2. "If I get stuck, I flag and move on."
That's it. Not "I'm going to smash this". Not "I hope I do well." Two operational statements that focus on execution.
After the paper
Do not talk about it with friends for at least 30 minutes. Everyone's memory of what was on the paper is already distorted by the emotion of the last hour. Give yourself space.
Then, if you have another paper coming, follow the between-papers plan. If you're done — done. Rest. Whatever mark comes, comes.
The one-line summary
Rest more, revise less, arrive rested. Everything else is noise.
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