Time Management: Maintaining a proper schedule for every task that you do can lead you to success. Prepare along with all daily tasks such as exercise, play, and every other task by managing the time.
Diet & Food: Maintain a completely healthy diet including fresh fruits and vegetables. Try to ignore oily stuff and have a properly balanced diet.
Positivity: Always try to be positive towards every work that you do and be focused towards all your activities along with studies. Being optimistic works very well many times in such situations.
Mock Tests: Prepare the best way by appearing as many mock tests you can, and analyze the results regularly. Try solving the portion which you find difficult in the mock tests and create a strong base.
The smart way to Prepare: Make separate sheets for formulas and theorem that can help you a lot while solving numerical in Physics and Mathematics.
Believe in yourself: Self-belief is most important as it generates a lot of positivity and gives a boost to your confidence.
Revise: Make sure you revise every topic thoroughly and prepare well every topic by revising time and again. Also, prepare separate revision plan for last minute preparation.
Make formula cheat sheets, keep your strategy planned while taking mocks, figure out the best way to attempt the exam to suit your aptitude, use less number of books for theory as it might confuse you, sleep adequately before the exam and go to the exam hall with a fresh and a confident mindset.