Hi, there is never an easy way but we can try. I would advise that you should start with online tests and combine your revision with it. Well here is how to do this- take a test, you will know what your good points are and where you are weak or have scored badly. Analyse and revise. Then take another test. do the same thing. You see you will revise and get better. You can take up any popular coaching centre' online series as all are same. If you wish to club the class 12 syllabus, do that for common topics and prepare. Also my advice would be to work out one past question paper for Class 12 also. As for timetable, prepare one by yourself by clubbing one strong topic with a weak one and thinking out a schedule when you should complete. Try to adhere to it. All the best!