Hi there. 

It is better to use an identity proof that has your photo on it. Rather than using your bank account copy you can use the following: 

•Passport

• Driving license

• Class X or XII admit card of Boards examinations

• Aadhar Card 

It is better to use the aforementioned documents than a bank account copy. For more relevant information on NEET application form kindly refer to the following link: 

https://www.google.co.in/amp/s/medicine.careers360.com/articles/how-fill-neet-application-form/amp

Wishing you luck!