Hi,

Good to see your passion. I would suggest that you study everyday for few hours. Set achievable targets on a daily or weekly basis. Keep revising whatever you study. Maintain another copy with important notes and formulae of each chapter which you can keep revising so that all burden is not on the last moment. Take tuitions/coaching as they will aid a lot in the process. Make a habit to clear all fundamentals as exams can be tricky. Do not hesitate to ask doubts to your teachers and peers. Solve many sample papers to increase your speed.

All the best!