Hi Shiva,

As your main focus is civil service exams then a wiser decision would be to take Bsc because it will be much less burden as compared to engineering.

So, it would be better if you continue with Bsc and along with that keep preparing for civil service exams. In addition to this, engineering is cost you more and it's not wise spend a lot on a thing which is not even your focus goal.

Good Luck !!!