The training and study of prolactin is to find a formal professional institution, learn quickly, professionally and technically better. Many domestic companies in Shenzhen say that training is unprofessional, but many of them are unprofessional. I have just taken a nanny for a month, and the skills of prolactinists are quite professional in formal institutions. I have been to Bain Breast-feeding Center for free, but I feel professional and unprofessional. I suggest you learn more about it online.
What prolactinists learn is nothing more than: the treatment of mastitis during lactation, physical therapy of traditional Chinese medicine, acupoint massage and so on.