A 28-year-old woman from Delhi presents with recurrent episodes of colicky abdominal pain and abdominal distension over the past 3 months. She has a history of open appendicectomy 5 years ago. Plain abdominal radiograph shows dilated small bowel loops with multiple air-fluid levels and a transition zone in the mid-small bowel. CT abdomen with IV contrast shows clustered small bowel loops with a transition point, and the mesentery appears tethered with a focal adhesion. The patient is hemodynamically stable with mild dehydration. What is the most appropriate next step in management?