.... Oh! And another thing: The key to managing blood sugar levels is managing carbohydrate intake. This is because carbs are responsible for raising blood sugar levels.
Not always so simple. He's type 1 so his body doesn't create insulin, or doesn't make enough. If he's just recently diagnosed then unless he has a huge swing on his luck scale it'll be some time before his a1c will be down low enough. A1c is a 3 month average of the hemoglobin in your blood, the less there is the better off you'll be. Last I had heard an a1c of 10 is an automatic fail regardless of your waiver. They want it under 8, preferably 6 to 5. My last one was a 7.6 I have type 2 insulin sensitivity. So my body makes insulin, but it doesn't use it effectively so I take metformin and invokana to manage mine.
May be helpful avoid any sugary liquids. My last dot they found sugar in my urine but did a blood test and found levels to be normal... They summed it up to be that I drink a lot of soda... Wich I do... Never been diagnosed with or had any signs of diabetes