Hi Rashidnoor Shaikh,

After you have opted for free exit in the first round, all the process is just the same. You can apply for the second round and do your choice filling same way as you did previously for the first round. Note that, once you confirm the allotted seat in the second round, you cannot resign it and also you will not be allowed to participate for the state counselling rounds.

For more information, refer the following article: https://medicine.careers360.com/articles/neet-counselling#NEET-Counselling-Process