CPT while in nursing program

Hi I am an international student from Korea. Now I am waiting for ASU nursing program to start in this fall semester, and while waiting, I am planning to get a CNA certificate during this summer break. I am also going to start volunteering for one of the hospitals around my house.

If it is possible, I would love to work as a part-time CNA through CPT while in nursing school. Based on my understanding, CPT will allow me to work until gradation without reducing my OPT opportunities, as long as the job is closely related to my major and is a part-time job (I know if my CPT is a full time job, it will decrease OPT). I believe being a part-time CNA during my junior and senior year can provide me with a great chance to start off my career without violating any immigration law. Please correct me if I am wrong..

Also, I would like to apply for an unpaid internship program for the next summer(most likely, but they offer this program every semester) after my junior year. It is a 2-month educational program offered by one of the famous hospitals around my area. This can be a good experience as well, but the thing is, I am not sure if this will be considered my CPT.. Is there any foreign nursing student who has gone through similar internship programs?

It makes me worry to read about how difficult it is to get a job as a foreign nurse with little/no experience after graduation.. It would be awesome if I can get some hands-on experiences so that I can be more ready to be in nursing profession. I will look forward to your reply! Thanks in advance:)