We have some things in common--my A1C was over 11 when they found my diabetes 6 years ago. I, too, am pretty active; walking 5 days a week, 150 minutes total. And, I also love to have late-night snacks. Since you are retired nurse, you could easily understand a book I will recommend to you, it is called Understanding Diabetes by--H. Peter Chase 11 edition. It has a picture of the cartoon character The Pink Panther on it, but make no mistake about it, it is an excellent book. My wife is a PNP, and this book came highly recommended by a doctor at her hospital. Try to limit your late-night snack to 15 carbs and 7 grams of protein--that is what the book recommended. Anymore and you will see it rise a whole lot the next morning. I sometimes have 30 carbs for a late-night snack, but always "forget" to check the next morning--o.k., I "forget" on purpose, because it will be very high. Best of luck to you my friend. Will keep you in my prayers!