Hey Shiwangi,

It totally depends on You if you find yourself satisfied with requirements of your college then just go for it. And as NIT Sikkim is good as well as you got CSE. So further round will surely increase chances of better colleges but it not recommended totally. I would say if you feel satisfied then stick into NIT Sikkim. And please keep consulting your parents/guardian and you mentors as Well. There guidance is more helpful then others.

Best of luck

The fact whether you will be able to get a better college in the further rounds of counselling will depend on your rank and how you have filled the choices in the JOSAA choice filling. These factors will decide whether you will be able to get a better college in the further rounds. Hope this helps.