Since I’m giving 12th boards this year I do have a strategy in my mind. I just hope it works for me. Since I’m a JEE aspirant i invested my whole 2 years in solving MCQ questions as a result of which my writing habit has been affected. So to make up for that I’ve studied EVERYTHING only by writing. Even if I’m reading the ncert I’d write that. I studied almost everything by 20th February. Now the main part is that you should know how to put knowledge into words. For that I solved the archive (chapterwise board questions since 2001 to 2018) for all the subjects except languages.
Between the exam strategy depends on the gap. Example..Physics exam is 2 days after english. Nothing great can be done in that time. So I’ve only kept revision for one day and then PRACTICE. Sample paper previous year paper whatever i get . ATLEAST 2.With exact environment. Exact timings. In fact, my teacher told to practice keeping in mind that we get only 2.5 hours and not three.This will increase the speed and minimise the risk of not completing the paper on time. Further if you practice well enough you may even get time to go through it once. For exams with Longer gaps I’ve given 2–3 days for revision depending on the gap and the last 2–3 days for papers and significant topics. Even if you’re not able to complete the syllabus don’t try to read something new. Instead practice what you know.