Greetings,

As a general rule, if you book/freeze/lock your seat in the first round it would be considered as your chosen option and subsequently if you fail to submit your documents to the university that you had locked you could be penalized before being admitted into round 2

so do not lock your seat if you wish to smoothly transition into round 2 and hope that you get your desired college in the second round.

visit this link for more info on how the counselling process works, best of luck for your admissions.

https://hospitality.careers360.com/articles/nchmct-jee-counselling