You will have to STUDY 23 HOURS
That’s a silly questiontion to be honest 😉
Even if you study 6 hours
with high concentration and peace of mind, you can clear even IIT 😉
MAKE SURE
1.You follow a time table.
2. You revise after your school or coaching.
3. Watch some motivational videos to keep yourself on track.
I would recommend- Prince Ea and Mensutra.