Hey there

Many people say that NCERT is enough to crack JEE mains but I'll say it is partially true only for chemistry you can fully rely on NCERT but for physics and maths choose reference books like HC Verma, Rd Sharma etc. Also I advise you to fully solve and read your coaching materials and notes then only NCERT will help as it has written in a much compact way.

Check about JEE mains

https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/exams/jee-main&ved=2ahUKEwivg43AwNLkAhX77XMBHTw1ANUQFjAAegQIAxAB&usg=AOvVaw1k3rMyr-Osb0qy4gsPfOaR good luck