Dear Rohini,

If you want to clear NEET with good marks make sure your concepts are clear and your basics are strong. You can take help of NCERT to build your fundamentals strong. Syllabus of NEET is based on NCERT books only. You can also go through NCERT exemplar. Focus on important topics more you can also solve MCQs related to important chapters. So, that your all important questions are covered. 

You can prepare your own notes it will help you at the time of revision. You can go through previous year papers to understand the exam pattern and level of questions. Solve complete mock test series twice or thrice a week to analyze your performance level and to know your strength and weakness. So, you can work upon them.

All the Best!!