No, the National Testing Agency (NTA) does not release official chapter-wise weightage for the NEET exam every year.

Many educational websites and coaching institutes release their own estimates of chapter-wise weightage for NEET. These estimates can be a helpful guide for your studies, but it's important to remember that they are not official and the actual distribution of questions may vary slightly from year to year.

While chapter weightage can be a helpful tool, it's important to strive for a strong understanding of all the topics in the NEET syllabus. Don't neglect any chapters entirely, and focus on building a solid foundation in all areas.

https://medicine.careers360.com/download/ebooks/how-prepare-for-neet-with-class-12-board-exam

I hope it helps!