Hello Batila Amulya. Thanks for contacting Careers360 and we hope we will be able to answer your query. 

Basically, the procedure to pursue architecture is to:

• First clear JEE Mains paper 2;
• Then qualify JEE Advanced;
• And then register for the Architecture Aptitude Test (AAT) 

Please, see this Quora question for more information:

• https://www.quora.com/in/Is-it-required-to-write-a-JEE-Mains-Paper-1-to-get-into-architecture-in-IIT-or-is-only-Paper-2-enough

Also, see this Aglasem article for more information about AAT:

• https://admission.aglasem.com/jee-advanced-architecture-aptitude-test/

Hope this helps you and all the best! 

Hii Amulya.Hope you are doing good.Yes you are right.There is no advanced exam for paper-2.Hope this helps you.If you have any query please feel free to ask