For NEET exam, you have to study all chapters from Physics, Chemistry and Biology. If you are a Hindi medium student, still NCERT books are the best to prepare. You must know how many total chapters are there so you can make a proper study plan. In Chemistry, there are around 30 chapters, in Biology also more than 30 chapters, and in Physics around 30 chapters. You have to prepare all chapters equally because NEET asks questions from all subjects.

• NEET includes Physics, Chemistry and Biology
• Each subject has around 30 or more chapters
• NCERT books are best for Hindi and English medium both
• Every chapter is important, do not skip any
• Make a daily study plan to complete syllabus on time

https://medicine.careers360.com/articles/neet-syllabus