If you're exclusively pumping, on average, you should try maintain full milk production of about 25 - 35 oz. (wyattspharmacy.com)
Once you have reached full milk production, maintain a schedule that continues producing about 25 - 35oz of breastmilk in a 24 hour period. (wyattspharmacy.com)
And, once they resolve, the testosterone levels decrease allowing full milk production to begin. (verywellfamily.com)