A 43-year-old woman presents to the emergency room with 24 hours of nausea, vomiting, and bloating. She has history of Crohn’s disease with no prior surgery and is currently not taking any medications. She smokes one pack of cigarettes per day. Computed tomography (CT) is obtained (see figure below). Magnetic resonance enterography (MRE) shows mucosal edema and hyperenhancement. She is treated with intravenous (IV) fluid resuscitation, bowel rest, and nasogastric decompression. Inpatient colonoscopy performed 4 days later demonstrates inflamed ileal mucosa and narrowed lumen. What is the best next step in this patient’s management?