Is there a relationship between breast size and milk volume ?
Breast size has nothing to do with lactation. Almost all women's breasts can make enough milk for a baby. Breast size is mainly determined by the amount of fat rather than the amount of breast tissue. Breasts and areolas also come in different shapes and sizes. As long as the baby is born to start sucking and there is no interference from the pacifier, the baby can eat breast milk smoothly.
The breast capacity of each woman may be different, some are large, and the baby may breastfeed again after a short interval. As long as the baby wants to breastfeed when it wants to eat, there is no difference in the amount of milk produced by the mother a day, enough for the baby to eat.