How to plan O Level revision for seven subjects without burning out

"How many hours a day should I study?" is a fair question, but there is no honest single answer. It depends on how many subjects you sit, how much of each you have already learned, how long is left, and how you work.

Hours are also the wrong thing to count. Three hours of rereading notes with a phone nearby can do less than one hour of properly testing yourself. So plan by what you need to cover, then fit the hours to it. "Tuesday: Chemistry, moles, ten exam questions, marked" is a far more useful plan than "Tuesday: three hours of Chemistry".

Start at the end.

1. Get your exam timetable from your school or exam centre, and write down every paper with its date.
2. List the topics for each subject. Use the syllabus or specification for your code, not a textbook's contents page, so nothing is missed.
3. Rate each topic as confident, shaky or weak. Be honest: a few exam questions on the topic are a better test than a feeling.
4. Count the weeks left, and keep the last two or three for whole papers and fixing mistakes.
5. Share out the rest. Put weak and shaky topics into the weeks before that, most of them early, so there is time to come back to them.

Leave some slack: a spare evening each week for things that overrun, illness or school work. A plan with no gaps breaks the first time something goes wrong, and a broken plan is easy to give up on.

Rereading feels productive because the material looks familiar. But recognising something on the page is not the same as producing it in an exam, with the page closed.

Testing yourself trains exactly what the exam asks for: pulling the idea out of your own memory. Some ways to do it:

• Blank page. Close the book, write everything you remember about a topic, then check and fill the gaps in a different colour.
• Questions first. Do exam questions on a topic, then go to your notes only for what you got wrong.
• Flashcards for definitions, equations, tests and colours, with the question on one side and the answer on the other.
• Explain it aloud, to someone else or to yourself, without looking.

It feels harder than rereading. That is the point: the effort of remembering is what makes the memory stronger.

Spacing. Come back to a topic a few days after you first revised it, then again a week or two later. Each return should be a short test, not a reread. A topic revised once, weeks before the exam, will have faded by the day.

Mixing. Once you know several topics, practise them mixed together rather than one block at a time. In the exam, questions do not arrive labelled with their topic. Part of the skill is recognising which idea a question needs, and mixed practice trains that.

In practice, a week might hold a few new topics, short tests on topics from earlier weeks, and one mixed set of questions at the weekend.

It is natural to spend time on the subjects you enjoy, because they feel good. Your marks usually have more room to grow in the ones you avoid.

• Give your weakest subject the first slot of the day, when you are freshest.
• Break it into small, specific tasks so that starting feels possible: "ten questions on moles", not "do Chemistry".
• Keep strong subjects going with short, regular tests, so they do not slip.

If a subject feels hopeless, look at why the marks are going before you decide anything. Missing knowledge, answering the wrong way and running out of time each need a different fix. The guide to command words helps with the second.

Sleep is when the day's learning settles. Cutting it to fit in more revision usually costs more than it gains, especially in the final weeks. Keep a regular bedtime, and stop revising a little before it.

Your phone is the other big one. Notifications break concentration even when you do not answer them. During a study block, put the phone in another room or out of reach, and check it in the break. Short blocks with real breaks, such as 30 to 50 minutes of work and then 5 to 10 minutes away from the desk, suit many students better than long, distracted sessions.

If you feel constantly exhausted, anxious or unable to switch off, talk to a parent, a teacher or your school counsellor. That is not something to solve alone with a better timetable.

Eight weeks is not long, so be selective.

1. Week 1: sit one timed past paper in each subject and mark it honestly. Sort the lost marks by topic. That is your list.
2. Weeks 2 to 5: work through the list, weakest topics first. For each one, a short review, then exam questions on it, marked against the mark scheme.
3. Weeks 6 and 7: whole papers on the real clock across your subjects, each one marked and its mistakes added to your list.
4. Week 8: clear the mistakes list, go over formula and definition lists, and sleep properly. No new topics.

You will not cover everything perfectly in eight weeks. What matters is fixing the topics that cost you the most marks.

A school-term week might look like this. Change it to fit your timetable, your subjects and your energy.

The subjects matter less than the pattern: hard things first, a short test every day, one timed paper a week and one easy evening.

If you use Eudika Learn, your practice history shows your weak topics in each subject, which is a quick way to fill the first column. The mock test builder makes a timed paper from the topics and papers you choose, for the Saturday slot. The full method is in how to practise past papers.