No,you cannot appear without qualifying in advance

Hello abhi,

A student has to clear both JEE Mains Papers(1 & 2) and also achieve a decent rank in JEE Advanced(i.e. CML Rank) in order to be eligible for AAT for IIT. This is because your admission into IITs is purely based on your JEE Advanced Rank. Qualifying in AAT will make you further eligible for B.Arch/B.Des programs in IITs. But still your JEE Advanced Rank is required for admission, as there is no score in AAT(just qualify/disqualify).
The link below will provide you with further related details:
https://www.google.co.in/amp/s/engineering.careers360.com/articles/jee-advanced-aat%3famp

Good luck