Hello,


First of all focus on your studies right now and get good marks in class 9th as well as next year 10th board.Dear, i am not getting positivity from the way you are into dream of getting IIT.Trust me it doesn't make any sense to just think.everytime for iit, this will make a maniac.Just let it be and go with the flow and just keep it simple.
Now follow this routine from class 11th:

Just start with the syllabus
1. Analyse the syllabus wholly.
2. Highlight the topics which you haven't read yet, and start with them
3. Make a routine and divide the timing for the three subjects.
4. In 11th, everything would seem to be very new to you. So start with a basic book, I would suggest for the very recommended NCERT  for physics and chemistry.
For maths, practice from R.D Sharma or RS Agarwal.
5. After completion of every chapter, you practice the DDP and study material of any good coaching or else, practice previous years question s.
For phy, i would recommend you to study and practice D.C Pandey.
For chem, ncert +RC Mukherjee(physical) , I think that would be enough .

After, completing your syllabus, probably in the month of Dec, start giving me test series of a good institute.

Trust me its all what you need.Dont rush.Be positive and punctual.


Goodluck