See for NEET if you are studying any course which have Biology/Biotechnology, Physics and Chemistry in the curriculum then you can use the criteria as a code in NEET application form. Now if you are studying a subject which don't have this subject combination, then as per the NEET you are accounted to be a dropper. As a result, you won't need to give the Bonafide certificate of VIT because the course work of VIT don't matter in your application. If you have studied  Biology/Biotechnology, Physics and Chemistry subjects, then you have to submit the bonafide of the college as well as you have to mention a different code during the NEET form fill up.

So you have to submit the school Bonafide certificate.

To know more about the NEET college predictor, you may visit the link provided below:

https://medicine.careers360.com/neet-college-predictor

I hope this answer helps. All the very best for your future endeavors!