If you want to secure good marks/rank in NEET you have to complete NCERT books for your preparation.

You can also refer below details how NEET 2016 topper Het Shah secure top rank in NEET-

Hets exam strategy was simple. He advises giving more time to weaker subjects. Most students find physics difficult but for me, it was pretty easy. This is because it is logical and does not require memorizing repeatedly like biology. For physics, I did a limited number of questions to understand the concept while biology, I had to study again and again to memories the concepts. While preparing for chemistry, there is inorganic chemistry which is again the same as biology  it requires memorization. On the other hand, Organic chemistry requires understanding the mechanism which helps a lot, he says.

He says I covered all 10 years question papers of AIPMT. Sometimes the questions are repeated. Although there is some difference between AIPMT and NEET, the paper pattern of the two was more or less the same.

While preparing for the exam, he found the NCERT books to be the most valuable. One can take the help of reference books as well. You can also take reference material from coaching institutes. You need to develop ones own technique for cracking the exam.

For reference, he used the NCERT books for biology as well as last years papers whereas for chemistry, he used books from Balaji Publications. For physics, he referred to D Mukherjee and S C Verma books. He says that he also used the study material obtained from his coaching institute.