Hello there

As I can see if you are in your first year currently and doing your graduation then yes you can somehow change your course from bsc to bca. This totally depends upon your college whether it have vacant seats for bca Or not. You can contact to your college in this case.

But if you have cleared your first year and if there's no any way coming out then there's only one option there left and that is you have to apply for bca again in the next year and then you can do that.

I hope it helps you!

Thank you!