Hi Aniket, 

I hope you are doing good. Now Coming to your query, No Ankit you cannot change your choices in the 2nd round that's why we have to take care while filling gin 1st round. The fresh registration candidate only able to fill choices in the 2nd round but for you, it's just about the Upgradation of choices. TRp clarify any doubts regarding NEET counseling you can visit the link https://medicine.careers360.com/articles/neet-counselling-faqs

All the best.

Thank you.