My SIL gave birth a week ago, and has very sore nipples. They often hurt throughout feeding, and SIL is starting to dread bf. They saw a breast-feeding consultant who diagnosed a mild case of tongue-tie (which the grandfather and uncle of my niece also have). The breast-feeding consultant suggested to snip the tongue-tie. SIL is very concerned about this. They talked to their paediatrician (they are in the US), who suggested that frenotomies are outdated, and nipple shields would solve the problem. Does anyone have any experience with this?