Often chronic low milk supply can be tied to other anatomical issues like tongue or lip ties in babies or hormonal imbalance or insufficient glandular tissue in mom. (mamanatural.com)
It doesn't mean you're doing something wrong — there can be many causes, from anatomical issues to infection. (kellymom.com)
Other times anatomical issues related to your baby's mouth, tongue, or palate can cause problems. (ayeletkaznelson.com)