Hello!

It is quite difficult to change branch after completion of the course. Different colleges have different procedure for changing branch. Some colleges allows students to  change their branch in the first year of the program.

Since you want to change the branch after completing the course, you will have to ask to your college authorities about the procedure and criteria needed for changing one's branch. You can only change the branch if your college offers this provision.

Since you have not mentioned your college, I will not be able to provide details about the criteria needed for it.

Hope this information will be helpful.