Thank you for your question.
I am Dr Saha, I shall try my best to help you.
He may need more insulin and diet regulation, exercise.
Online we should not advise about insulin dose without examining him in person as it is a prescription medicine.
If the level exceeds 300 mg/dl you should contact doctor asap.
Usually blood sugar more than 400 mg/dl can lead to drowsiness, ketoacidosis, coma.
It should be treated promptly.
Blood sugar 278 is high, though our body can adapt at higher levels.
You should contact a diabetic specialist or GP to make a management plan.
I hope this information helps.
If there’s anything else I can do, please let me know.
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