A large proportion of breastfeeding mothers stop within the first month postpartum, and the infant feeding preferences of mothers’ immediate social network are strongly associated with breastfeeding continuation. Thus, the opinions of the significant social network members could serve as markers for health professionals to identify mothers with higher odds of early breastfeeding cessation so that they can be provided with additional support. In addition, unlike other immutable demographic factors in association with breastfeeding, breastfeeding support can be modified. Prenatal breastfeeding education programs can involve significant family members to enhance their emotional and practical support for breastfeeding women. Future studies on breastfeeding interventions involving the significant persons in the mother’s social network are needed for further promotion of breastfeeding.