Hiiii

First things first, you must be dedicated towards you study.
Since now only 6 months are left for the exam you need smart study at this point of time. Do not waste time unnecessarily, analyse your strong and week parts. Revise all the topics that you feel you have strong hold on so that you do not need to waste time on them again and again.
Try to clear all your concepts and have a clear vision about any topic you have
covered.

Firstly make a schedule of your daily routine and stick to your plan, yes you can make necessary changes according to the need of hour. There’s no need of studying continuously, divide your day in slots o with breaks in-between So that both your body and mind remains relaxed and ofcourse efficient.

Remember to give equal time to all the three subjects physics chemistry and biology. Do not leave any of the three subjects.Be honest towards you studies and plan your tasks on daily as well as weekly basis.
Don’t let your doubts pile up. Take help from teacher, internet or you can also post
your questions on careers360 so that we can help you.

Take online mock tests. Improve your speed.
Try to solve sample papers and previous year papers regularly and time all your
papers so as to analyse your speed and result.
Also I won’t advice you for late night studies, Sleep Early so as to keep your mind active and fresh. Also engage in some physical exercise like a short evening walk so that you remain active.

At last the most imortant thing, Believe in yourself and stay confident.

ALL THE BEST.