Sometimes a mother is producing so little milk that her breasts begin to dry up. ... The most common cause of a low milk supply is not breastfeeding often enough. This may happen if your baby gets too much formula. Other possible causes are your breastfeeding technique, or reasons related to your or your baby's health.

How do I know if my milk is drying up?

If your baby hasn't produced urine in several hours, has no tears when crying, has a sunken soft spot on their head, and/or has excessive sleepiness or low energy levels, they may be dehydrated (or at least on their way to becoming so). If you see signs of dehydration, you should contact their doctor right away.

Can I get my milk back after it has dried up?

It doesn't matter if you breastfeed for a short amount of time or for years, relactation is the process of bringing your milk supply back. Your milk supply may come back fully and be enough to feed your baby 100% breastmilk. Other times you may need to supplement with donor milk or formula, whatever your preference is.