Whether it's coaching or self study, the only thing matters is your hard work that too Honest Hard work.

You know, there are only 2900 and 21000 seats in IIT's and for these seats more than 8 lakhs students appear in the exam.

So, it is all upto you and your hard work. Just follow the daily routine, you can get various types of routine to follow, some will say study in day time some will suggest for Night time. Listen to everyone's advice and follow only one.

All the best!!