Yes, you can switch your college but make sure to do the following things beforehand:

• Keep good grades, in case someone else also applies for it you can be the best available candidate.
• Download the college transfer form from the RGPV website.
• Keep following UIT, RGPV's website to know when the procedure starts and the number of seats available for different branches, and in which caste category.

Importantly, you will need a NOC (Non-objection certificate) from your college stating that they don't have any problem with you changing the college. This is tricky because colleges like OIST will not do that because if they do so, they will lose students and fees.

But once you're done with NOC, you can come for the counseling process in UIT RGPV.