My mother is a type 2 though insulin dependent diabetic regularly taking Novolog and Levemir insulin. For reasons not entirely understood, her blood glucose level spiked to 524 an hour ago. I have been in touch with her physician and he advised me to wait for a full 2 hours after taking a corrective dose of bolus insulin (Novolog) before expecting a dramatic lowering of her blood glucose level. My worry is that she is 93 years old and typically naps in the afternoon. I am worried she could slip into a diabetic coma without me even knowing it. Am I being paranoid? Please advise. Any help would be so greatly appreciated.