First of all i would like to tell you that when you fill your jee mains exams you have the optional exam that you can fill is jee main 2 for B.arch jee main 1 is there for b.tech now like you have given your jee mains 1 twice and not given jee mains 2 so you can now give both of these exams next year in january and april 

Your have last chance to appear for jee Advanced though 

There are also other reputed institutes that conduct their exam seperately you can also go for them 

1 NATA 

2.AMU B.arch Exam

3. KCET