From my personal experience, after being selected in jee examination in my very first attempt, what I can suggest to young aspirants is that you need to have a burning desire for making it to IIT. If you are fiercely passionate about it, then its not a big deal. You ppl need to make continuos efforts to clear all your basic concepts and need to evolve your thinking process. Don’t ignore Chemistry, its a rank making mean.
Try to correlate different topics to understand underlying fundamentals involved. Instead of doing all topics, try to get expertise in some specific topics which ensures their cracking in examination. So whatever you do, try to accomplish excellence in that field. As far as time management is concerned, its not the hours you put in work that counts, its the work you put in hours that count. So stop[ betraying yourself wid constraints of time and try to relaise your real potential!Keep struggling... celebration isn’t much far:)