When trying to breastfeed for the first time, your breast must be prepared for Let-Down. The let-down reflex means your milk supply is ready to flow. Sufficient milk supply makes breastfeeding easier for you and your baby. Your breasts will often tickle or tingle as your baby latch on and begin to breastfeed. Often after your baby unlatches from your nipple, unused breast milk will drip. This is a healthy sign that your milk has “let-down.”