Dear Aspirant,
You can complete graduation i.e. b.tech in civil engineering and then you can pursue interior design courses. Otherwise, you can drop yourself from the engineering college and enroll yourself in interior design courses.
However, if you leave the b.tech Midway, then you will loose precious time that you had given to it for almost 2 years. There is no problem if you pick the second choice and want to directly dive into interior designing. Both choices will lead you to your goal, the only difference being is that the former option will allow you to have an extra degree and placement opportunities in engineering college, while the latter option will allow you to immediately start learning interior designing. Suit yourself. Pick the option which appeals you more.
If you really wanna start interior designing and don't want to waste any more time, then the second option is the preferable one.
Good luck in whatever choices that you make. Remember your aim and build your career accordingly. That way you will know which path to follow. All the best.
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