The purpose of this pilot study was to determine the prevalence of sustained breastfeeding in late preterm and early term breastfeeding infants at 1 and 2 months of age and to identify the factors that were related to sustained breastfeeding. Subjects were identified through purposive sampling and completed the Breastfeeding Self-Efficacy Scale and data were collected on lactation support, hospital course details, and demographic factors. At 1 and 2 months of age, structured telephone interviews determined the current feeding status and postdischarge lactation support. Of 126 mothers, 82% sustained breastfeeding at 1 month and 71.2% at 2 months. Factors associated with sustained breastfeeding at 2 months included a college education (P = .014), higher day 1 breastfeeding scores (P = .007), higher Breastfeeding Self-Efficacy scores (P = .046), and continued maternal skin-to-skin contact (P = .007). High after day 1 breastfeeding scores were associated with sustained breastfeeding at 1 month (P = .000) and 2 months (P = .001). Unsustained breastfeeding at 1 and 2 months was associated with the occurrence of supplemental feedings (P = .001) and pumping at discharge (1 month, P = .002; 2 months, P = .015). Identifying the factors associated with the high-sustained breastfeeding rate in this population helps nurses focus on how to best support their breastfeeding experience.