First of all, go through the syllabus thoroughly and understand it. After this, go through those subjects which are relatively easy for you, by doing this a part of your syllabus will be completed and it will help in increasing your confidence and you will be able to complete other subjects in less time.
Based on the days of the month and on the basis of your exam timetable, decide on the fixed days to study the subjects and make a timetable and follow it strictly.
One important thing, you should try to study from your self notes because the time is less, if you sit with the book then the time will take more, so study with short notes.
You must solve the previous year's papers, many times questions are asked directly from the previous question papers in the examinations, along with solving the old papers also helps you to solve the paper in the examination.
Do not be discouraged, try to read more and more in whatever time you have, your hard work will definitely give you success. All the best for your exam!
K Mohan @ Moga
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease
Try to understand the subject and never try for making it by heart. Understand the subject and write them in your own words. That will be always a better way. Without understanding the subject making by heart is of no use and it may be difficult to remember everything by making by heart.
Try to answer some of the old question papers. By seeing those papers, you can understand the pattern and get some idea about the methodology.
Knowledge is power.