It is difficult to say whether you will be able to join IIT Madras if you start preparing for JEE advanced from now. However, it is possible to get into IIT Madras with dedicated and consistent effort.
Here are some things you can do to increase your chances of getting into IIT Madras:
Getting into IIT Madras requires dedication, hard work, and consistent effort. If you start preparing early, have a solid study plan, practice regularly, and stay motivated, you can increase your chances of getting into IIT Madras.
You still need to provide more information since this question is slightly ill-posed. You will need to provide your credentials and the preparation that you have probably already done for this.
However, irrespective of this, you should be thorough with the concepts that you have already learned. Let me give you some advice as well.
If you have any doubts, you can definitely reach your teachers for help and they will be able to guide you. Do your best and try to go according to your timetable. This will surely help you.