An 82-year-old man is on a stroke ward two days after a large middle cerebral artery infarct. He failed the bedside swallow screen and a nurse has passed a nasogastric tube. The aspirate pH was 6.5 (gastric position indicated by 1–5.5), so you requested a chest X-ray. The radiology report states that the tube passes down the right side and its tip lies in the right main bronchus. He is comfortable, with a respiratory rate of 16/min and oxygen saturation 96% on air. The nurse asks whether she can start the prescribed feed and regular medicines through the tube.

What is the most appropriate initial action?