A 58-year-old man with type 2 diabetes mellitus (on metformin and insulin) and gastroesophageal reflux disease (GERD) is scheduled for emergency repair of a perforated duodenal ulcer. He consumed a full meal (rice, curry, and milk) at 22:00 hours the previous night. Surgery is scheduled at 08:00 AM the next morning (10 hours after food intake). On pre-anesthetic evaluation, he complains of epigastric discomfort and has a history of delayed gastric emptying. What is the most appropriate fasting status and pre-anesthetic management?