What about the mother who always felt full but suddenly does not? This mother’s milk supply may be regulating. That means that instead of tending to over-produce, the principle of supply and demand is starting to regulate the production of milk. It can take 6-12 weeks or more after the birth for the milk supply to regulate. While it can be very disconcerting for a mother when her breasts feel less full suddenly, it can actually be a blessing. Oversupply can lead to plugged ducts and mastitis. It can also give the baby problems with a foremilk/hindmilk imbalance. So it’s a good thing if the milk supply regulates and the mother can rest assured that the wheels of supply and demand are functioning.