Hi Athira, 

   Normally the NEET PG couseling is done in March every year.There will be 2 regular rounds and 1 Mop Up counselling round for 50 % All India Quota & For Deemed or Central Universities each. The counselling will be done into the online mode.

According to some sources here is a list of all the documents you need to submit at the time of counseling : 

1. NEET PG Admit Card issued by the National Board of Examination (NBE).
2. The result of NEET PF 2019
3. Marksheet of MBBS or equivalent qualification
4. Provisional Registration Certificate.
5. Class 10th Certificate
6. Birth Certificate
7. ID Proof- PAN Card/ Aadhar Card/ Driving License or Passport
8. Caste/ Disability or Both Certificate (If Applicable)

Hope this helps! All the best ! :)