Architecture

Please use college predictor tool for better results
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwjdmKnz4bHiAhU1jOYKHZnJDRsQFjAAegQIAhAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H

Please go with this college predictor. This will help you to choose the best college-
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
Thank you

Yes, you can give COMEDK or Amity School of Architect or AAT after JEE Main paper 1.

No, it's not possible for you to get admission in any of the NITs. As the total number of seats are less than 600, those who get AIR less than 1.5k can only get seats in NITs.

Yes, you can surely get admission there. If you have any query do let me know in the comments down below. All the best.

Yes, you have a very good chance to get admission. If you have any queries, do let me know in the comments on below. Thank you so much.

https://www.shiksha.com/architecture-planning/nata-exam-dates
This link might help you out, so if you have any queries do let me know in the comments down below.

Check for colleges which you think you are eligible to apply in Shiksha college section page. Upon eligibility, go to that college official website and fill-in online application or visit the campus and fill offline application if available. With this rank, you can get admission in some government colleges, but not possible for you to get admission in NITs.

There are chances that you can get admission with this score. You can apply for admission.
Good luck.