My boyfriend is 69 and diabetic. He is acting groggy and out of it . He says he did his insulin tonight, although I didn t witness this, as I sometimes do. I convinced him to check his blood sugar, and it registered 259. He said this is OK, then fell asleep. I m afraid to go to bed in case he is in crisis. 259 sounds high to me....am I off? If not, what should I do?