It is not easy to change majors in general, and it is difficult to change from a good major to a general major, let alone from an unpopular major to a popular major.

If you are like yourself, it may be relatively easy to change from biology to chemistry, but the procedure of changing majors is more troublesome. If you really want to change your major, you must carefully consider changing again.

Of course, it will be easier to succeed if you have a good relationship with your teacher or your family.