hey Ladies I have a question. so this is my first time successfully breastfeeding. my son is a week…

hey Ladies I have a question. so this is my first time successfully breastfeeding. my son is a week and 3 days old and has been breast fed since born my question is could I be losing milk production? my breast don't feel like they're getting full like they used to. or could it be that my breast are getting used to the feedings?