Hello student

hope you are doing great. As per your query  I would glad to tell you the fact that changing of stream is quite a difficult task  specially migration to cse stream because migration only arises when their are vacancy due to some student suddenly got left . But if you dean is saying vacancies are there ,then you should apply ,write a letter to dean complaining about the college authorities irresponsible work and they will definately took action against them

Hope you found this answer helpful. Good luck for your future