Well, as per the topper’s experience and some researches, NCERT books are enough to qualify NEET. But, to get a good score or rank it is advisable to refer and read other publications too. As per new rules, it is expected that NEET may upscale its game so aspirants may have to take an extra effort to clear NEET with a good rank.
Studying NCERT books for cracking NEET is a basic requirement. But that doesn’t give you enough support if you want to secure a good rank. When the aim is to secure a position in the top 100, they need to start reading the reference books. Reference books and practice papers play a role in the game of grabbing a seat which is of a topper.
It is always advisable for aspirants to begin their preparations with NCERT books and once they read it all, start reading reference books after it. NCERT is of the utmost importance. But that is just not enough if your goal is a rank!