Final answer:
The indication that a breastfed baby is getting an adequate amount of milk is the frequency in which they soak diapers a day, typically six or more soaked diapers after the first week. Crying frequency and sleep duration are not reliable indicators. Proper hydration and nutrition are provided through changes in breastmilk composition during lactation.
Step-by-step explanation:
An indication that a breastfed baby is getting an adequate amount of milk is the frequency in which they soak diapers a day. An adequate milk supply is reflected in the baby's output, notably in how many wet diapers they produce. A well-hydrated infant typically has six or more soaked diapers per day after the first week of life, which is a good indicator that they are receiving sufficient milk.
In contrast, how often they cry or how long they sleep during the night are not reliable indicators of adequate milk intake. Breastfeeding success is also reflected in the baby's weight gain, alertness, and overall well-being. During lactation, the composition of breastmilk changes significantly from colostrum in the initial days postpartum to mature milk as feeding progresses, catering to the infant's needs for hydration and nutrition.