Hi Rahul,

Preparing for NEET. Yes you need the practice paper . Practice as much as possible. This help you to know about the type questions and pattern of Question paper.

You can get practice paper from

-You can download the last year paper from the Google or the books which you refer also have the latest practice paper attached.

- The Flipkart and Amazon are providing whole books on NEET practice papers.You can buy at a discounted price and practice. For this you have to find the author which will suitable and compare it, then buy.

- You can take it from the relatives, friends or friends of friends who have previously apply for NEET.

- There are learning apps too like topper, meritnation , byjus etc. who are providing the practice paper too.

I hope you find it useful!!!

Hey. 

Here's a link for some NEET sample papers

https://medicine.careers360.com/articles/neet-sample-paper/amp

Other than the papers given on this link, you can trying solving a few numericals based questions from NCERT because they would give you a pretty good idea of how well you have prepared.

Also for Biology, I'd recommend that you should go through all the theory given in the NCERT because most of the questions for Biology are from the textbook.

Other references for you to refer:

1. Errorless for physics and chemistry.

2. NCERT at your fingertips for Biology.

These references would help you out with all kinds of questions.

Feel free to ask questions if you have any.

All the very best.