Hi,

To score first rank in IPE in 100-120 days is not a big task if you're studying and organizing your studies in the right way. You should wake up early in the morning around 4 and begin your studies from there. Study from 4am to 6 (3 hours) and then take a break of 1 hour. Continue studying from 8-10 am and then have your breakfast/lunch. Revise what you did at 12-2 pm and then take a nap as your brain needs rest to memorize things better. Continue studying from 4-8 and then take a break of an hour and have dinner. Revise again within an hour(quick revision) at 10 and then sleepy by 11. This way you'll have enough time to study and enough time to revise what you studied.

I hope this helps,

All the best