A 42-year-old man with a body mass index (BMI) of 34 has stricturing Crohn’s and will need to undergo an ileocecectomy. He smokes a half pack of cigarettes per day. He has previously failed azathioprine and 6-mercaptopurine (6-MP), and he is currently on infliximab and a prednisone taper. What modifiable risk factor would be the most helpful to mitigate to decrease his chances of postoperative infectious complications?