Hello Yash,

               With 69 percentile in JEE Mains Paper-2 in OBC category, it will be difficult to get a seat in NITs for B. Arch. according to previous year cutoffs.

You can check last year's cutoffs for B. Arch in NITs in the following link:

https://engineering.careers360.com/jee-main-architecture-college-predictor

               However, if you are interested in pursuing architecture for undergraduation, you can appear for NATA exam as well.

( https://engineering.careers360.com/exams/nata )

Hope it helps!