I am Trevor, and I have been a T1D since I was 2 years old. Recently, my a1Cs have been off the charts. I have been around 11 or so for the past couple of years. I had to do something to change my diet.
I found Keto! This is literally the best diet I have ever been on to control my blood sugars. There is a lot of research of how this diet is actually healthy for you as well.
Ever since starting the diet, I have been maintaining 110 BG consistently, bringing it up and down when I please!
The book I follow is called The Ketogenic Diet for Type 1 Diabetes and can be found here: http://www.ketogenic-diet-resource.com/treatment-for-diabetes.html
***There is a concern about ketones in your body vs diabetic ketoacidosis. This is NOT the same thing and you are protected on this diet by ever going into DKA. This is because when you are on the diet, with very low carbs `20g/day, you have moderate ketones in your body, which is good. After eating carbs, your ketones actually DECREASE due to carbohydrate ingestion, and your blood sugar will rise. THEREFORE, if you take enough insulin (and it is very easy to do so) to have a good constant blood sugar, you will not go into DKA.