JEE

No, because NATA scores are not excepted by most of the best colleges, they are only on basis of B.Arch, even some of state colleges not excepting NATA scores.

Solve previous years question, but without using answers keys. If you crack all of them, then your concept is good.

https://www.google.com/amp/s/www.shiksha.com/b-tech/articles/amp/jee-main-and-advanced-2016-prep-important-books-topics-blogId-11621
This link will help you to the best.

You have to believe in yourself that you utilize the one year properly for the preparation of JEE main. If you do not focus on your studies and concentrate, then your one year will going to be waste. Just work hard. Study strictly, practice more and more. Solve NCERT question and practice previous year question paper too. For any other query, please feel free to ask me.
Best of luck.

Hello,
Please use Shiksha college predictor
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor.

If you realize where actually you made mistakes and your peer mates won then you can prepare it at your home. Moreover, if you haven't studied seriously, it is necessary for you to take a good coaching institute with your determination which can actually drive your nerves to your goal. Moreover, in case first also, coaching is preferred as your home is unable to give you that atmosphere. Best of your luck.

You can refer to the below link:
http://nchmcounselling.nic.in/nchminfo/Handler/FileHandler.ashx?i=File&ii=64&iii=Y

See, if you want to join any college through institute quota then you have to only pay the donation and you don't need to worry about the marks.

DCRUST Murthal Sonipat: Now, it is a university but still has a craze.
YMCA, Faridabad- It is also now a university but the best option near NCR.
RBS SIET-Zainabad, Rewari - A new government institute but have a huge potential due to industrial area in NCR.

Yes, apply for the counselling.