PRenatal Video-Based Education and PostPARtum Effects

The purpose of the PREPARE Trial is to examine the impact of an antenatal milk expression (AME) intervention among women with pre-pregnancy BMI 25 or more on breastfeeding outcomes, including breastfeeding self-efficacy, breastfeeding duration and exclusivity, and perception of insufficient milk supply. Specifically, the investigators will: 1. Determine the effect of the AME intervention on short-term breastfeeding outcomes, including breastfeeding self-efficacy and exclusivity, to two weeks postpartum. 2. Explore the sustained effect of the AME intervention on longer-term breastfeeding duration and exclusivity over the first year postpartum. 3. Examine participants' experiences with and perceptions of AME.