Students applying for various majors should rank in the top 25% in the average score of compulsory courses in the first academic year of this major, and have no record of failing compulsory courses, and have not been punished (handled) during their school years.
Also, changing majors must pass the interview organized by the school, and it may not be successful.
In addition, you may be delayed. Students in grade 20 15 will change their majors, and some will become students in grade 20 16, which is about equal to freshmen.
Think about it yourself. Besides, preventive medicine is not bad, and employment is better than clinical medicine. Nowadays, it is very difficult for students of clinical medicine to find a job, which is tiring and makes little money. Don't look at the big experts who earn a lot of money, look at the residents in the hospital, see what they are doing and think clearly.