If you think that you have a decent preparation for JEE Advanced, then in all practicality you should wait for the results, as of you feel that you have prepared decently for JEE Advanced, then your JEE Main result will also be good and it would be good to take admission in any NIT (in the worst case), rather than taking admission in KIIT.

So, I would suggest you to wait for JEE Advanced results. Hope I have answered your question. All the best!