Engineering Entrance Exam

You should participate in JAC, Chandigarh counselling and UKTU Uttara hand counselling. JIIT Noida, BIT Patna campus, Jaipur campus and Deoghar campus may be another good options.

Yes, Chandigarh University is a good option to pursue among Chandigarh University, CGC and GNDU. It has a great infrastructure and great faculty members. It has high class facilities full Wi-Fi campus. Moreover, it has wonderful placements, 400 companies visited campus this year.
Good Luck.

Yes, you are eligible for next year JEE exam.J EE has nothing to do with your past years. Although you will have only one attempt for JEE Advanced and two for JEE Main.

You can check your eligibility for the colleges here:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Sorry, but you are not eligible for admission in Amity university. You need to score at least 80-200 marks in NATA and 60% in 12th to be eligible for admission in Amity.

Please check the college details by visiting the link mentioned below:
https://www.shiksha.com/b-tech/resources/mhcet-college-predictor

This score will not get you into any government college. So, you can either sit again and perform better in JEE or you can try for colleges that intake students on the basis of 12th percentage. Or you can always get into some private institute in case you only want the degree.

You can try for NITs. There are many NITs that provide an undergraduate degree in architecture. So, try out for NIT Trichy, Calicut, Patna, Raipur and Hamirpur.
Other than these, you can apply for SPAs.
SPA, New Delhi
SPA, Bhopal
SPA, Vijayawada
There are other reputed colleges:
J.J School of architecture, Mumbai
Manipal School of Architecture & Planning, Manipal
Chandigarh College of Architecture, Chandigarh

First try if you can get into your home state NIT or some low rank NIT. If not, then go for some regional engineering colleges or GFTI'S. In case you don't get a seat there then you can try for some good colleges under state universities.
Good luck.

Hello Abhishek,
For admission in any NIT, you need to take JEE Mains only. There is no other way out, However, if you are studying in B.Tech first year then concentrate on your B.Tech course. However, if you want to switch then prepare well for JEE Mains.