My Husband Is 67 A Type 2 Diabetic. Sugars Run

My husband is 67 a type 2 diabetic. sugars run 140 average. a1c 8. He sleeps a lot. Sits in chair and naps 3 times a day. 1.5 hours naps. Has sleep apnea and wears a machine at night. Does not get up in the night to urinate. Drinks a lot during the day. Is on Januvia and glipizide. Has high blood pressure runs about 140 over 90. Not real careful with the sweets if they are around. I try to bake with sugar sub. Is a meat and potato eater. If we have bread for a meal we do not have potatoes. Mainly my question is about him sleeping so much.