A 28-year-old primigravida at 36 weeks of gestation presents to the antenatal clinic for routine check-up. Abdominal examination reveals a hard, round mass in the fundus and fetal heart sounds are heard at the umbilicus. On per vaginum examination, the cervix is closed and uneffaced. Ultrasound confirms a frank breech presentation with adequate amniotic fluid and an estimated fetal weight of 2800 g. The patient has no contraindications to vaginal delivery. What is the most appropriate next step in management?