Hello Maths Tutor!

There is no need to crack iit exam with physics, chemistry ,maths for the architecture stream .

for your kind information for the architecture there is no subjects like physics and chemistry are present.

so you cant do better preparation for architecture exam through iit coaching.

you can get best architecture college by giving exams like AIEEE OR NATA ( national aptitude test for architecture) .
you can get admission in iit kharagpur and another best colleges through above mentioned exams.

so you have to change your coaching.
because subjects for architecture exam are
1) mathematics
2) aptitude test
3) drawing test

there are good coaching centers in mumbai for architecture .
you have get admission in those coaching centers where the coaching of above mentioned subjects takes place. 

Hope this will help you!

Thank You!