A 32-year-old multiparous woman (G3P2) at 40 weeks gestation is admitted to the labor ward with strong uterine contractions every 1–2 minutes. On vaginal examination, the cervix is fully dilated (10 cm), 100% effaced, and the fetal head is at +2 station. The patient is in severe pain, restless, and reports an urge to bear down. Fetal heart rate is 140 bpm with good variability. What is the most appropriate next step in management?