Management of Hyperglycemia in TPN Patient

A 70-year-old patient with a history of diabetes mellitus and chronic renal failure is initiated on Total Parenteral Nutrition (TPN) due to severe malnutrition from prolonged gastrointestinal dysfunction. The TPN prescription includes a high concentration of dextrose, a significant amount of potassium, and a standard amino acid formulation. After a few days of therapy, the nurse notes that the patient has developed hyperglycemia and elevated potassium levels. Considering these complications, what would be the most appropriate nursing intervention to address the immediate concerns for this patient?