You need a RN to become a maternal newborn nurse. It doesnt matter if its a an associate degree or bachelors. I hear some states its ok to be a LPN/LVN, but it depends on the state. Please check your state.
CNA/medical assistant experience is ok to get a job as a assistant in maternal health. If you trying to get some experience while in nursing school
I would recommend it. You will get to know the unit, know the manager and staff. Easy transition and you will be a better candidate compared to someone without experience when trying to apply as a RN later down the road.
CNA licensing depends on your state. Once it expired, you may have to retake a CNA program.
I wanted to go into maternal newborn too. I worked as nurse aide in postpartum and intern in L&D. Unfortunately, there was no new grad job available at the hospital I worked at.
Many nurses suggest to get your experience in med-surg before specializing in L&D and Postpartum. I took a New Grad job in med-surg. I tried to get my DONA doula training/certificate/volunteer. It was tough working full time nights to finish the certificate program. I am still trying to do this the best that I can and just do a lot of CE readings in Maternal Health and OB-GYN.