Hey abhishek,

According to your query,

Yes you can alter your filled choices in first round.  If you feel it is needed to be altered then you can do it.  All you need to do is to visit the official website of the counselling session and where  results are to be declared and alter your choices.

Hope you find it useful.

Thank you.

Hi Abhishek, 

Yes, of course you can alter your choices of 1st round counselling in the form of 2nd round of counselling very easily as candidates are given its facilities , to alter the sequence of their choice of preference in the new registration of counsellings.

Good luck.