To change colleges you need to first talk to the Management of the current college. They might ask you to make the full course payment. And you should also talk to the second college management to check if they have vacancy for 2nd year. If they have you will have to take TC from the current college. Your admission will not happen on the basis of merit or entrance exam. Because you are changing your college on your own, it will come under management quota and you have to pay hefty fees for it.