If you are enquiring about All India Counseling, then no. For every round, fresh registrations are accepted. So if you do not register for Round 1, you can register for Round 2. Please follow these steps:

1. Register for Counselling by paying refundable and non refundable fees
2. During Choice Locking, select Colleges that you want a seat in
3. And once the seat has been alotted join the College if you like or participate in the further Rounds.

Please read our article for complete information: https://medicine.careers360.com/articles/neet-counselling

You will need the following documents for Document Verification and Counselling:

• 8 passport size photographs
• 10th marks sheet
• 12th marks sheet
• Valid Id proof
• NEET 2020 admit card
• NEET 2020 Rank card
• Provisional Allottment Letter
• Category Certificate if applicable
• Domicile Certificate if applicable
• PWD Certificate if applicable

Our MBBS Companion can help you with all this: https://www.careers360.com/mbbs-companion