Thanks for A2A,
Your Question is a thing of concern for many NEET aspirants …
But honestly speaking , for Biology ,NCERT is just the only key to get good marks ..but for chemistry ,NCERT is a little insufficient and for Physics it’s just worst…
So basically from my point of view , these coachings are basically for building our concepts in Physics and Chemistry because we can not do “Rattafication “ here . And also there are some Questions in biology section which always come out of NCERT… so , if you want to do that much excel in NEET then coachings are a must…And on the Same point you can aslo get the same by doing self studies by watching online recorded lectures for free….
So choice is yours!
Best of luck!!