Please help! I seem to have a lot of milk! My milk comes out very fast, and my baby has a hard time emptying my breasts. Why is this happening, and what can I do about it?
It sounds like you may have an oversupply and an overactive letdown.
Oversupply
Leaking a lot between feedings, always feeling full and hard, or experiencing your milk gushing out when breastfeeding are all symptoms of oversupply. This is fairly common, especially if you used a pump in addition to latching during the first few weeks after birth. Oversupply means your body is making more milk than your baby needs. To correct this, hold off on additional pumping and nurse your baby on the breast only! Be sure your baby empties the first breast before switching to the other. This may mean feeding off only one side for an hour or two.
With a normal milk supply, once the baby empties fresh milk from the breast, they start pulling fat that has been collected in the milk ducts. This fat keeps the baby full longer, aids in digestion, and steady weight gain. Babies whose mothers have an oversupply may gain a lot of weight quickly. They tend to snack more frequently because they fill up faster. This does not leave much time for fat to collect in milk ducts or for the infant to drain the fat from the breast. Massage your breasts during feeding to loosen the milk ducts and help release the higher-fat milk that is stored in the ducts at the back of the breast.
To ease discomfort, use cool packs on your breasts to help with swelling. Instead of pumping, try hand expressing a small amount until you are not in pain.
Overactive Letdown
Not every mother who has an oversupply has a forceful letdown, but a forceful letdown often goes along with oversupply. With an overactive (forceful) letdown, your baby might choke on your milk when feeding. These babies often have more gas, seem fussy before burping or being laid down and have trouble pooping.
The laid-back breastfeeding position can help slow the flow of milk and be more manageable for your baby. Hand expressing until letdown and waiting for the flow to slow before latching baby may also help.
Over time, using the right tips, your oversupply will regulate to a normal supply, and your overactive letdown can be managed. Great job working through this!
SOURCE: https://www.laleche.org.uk/too-much-milk-and-oversupply/