Best timetable for studying 4 subjects?

Hi, a student in O-Levels here.

Considering I have barely 3 months until my May/June exams, and the fact that I haven’t properly studied in ages, what would be a perfect daily timetable for me? I’m taking Maths, Physics, Biology and Chemistry 🥲

Hey I'm taking Maths Biology Chemistry and Further Maths, so pretty close combo.

Do this everyday...

Modify this to what time your school ends. But this way you get at least 1 hour 45 mins or revision done daily (which isn;t that bad when you think it amounts to 12.25 hours a week. Alternate every day the subjects, so Monday Maths and Physics, Tuesday Biology and Chemistry.

Use 50% of free lessons to study. If you have a double lesson break in between lessons - write notes, do some blurting, practise past papers. Use your free time wisely, but also relax.

Most colleges recommend 4 hours per subject per week. So 20 for you. 12.25 hours, with lets say 1 free lesson per day is about 17.25 hours. Then on weekend you may do little more little less.

Clearly this timetable will change a bit if you have clubs or events on certain days, and at first it looks daunting, but if you don't have any homework or tests upcoming, your 7-8 slot is free to do whatever. you'd like