You say you bolus before meals, if needed. i don't understand that. I bolus before all meals ans snacks. If I don't do that I have very high blood sugar later, and it can take several hours to bring it down with a correction bolus, You can have much mre stable control if you use carb counting to determine your dosages before eating something. I need 1 unit of insulin for every 8 carbs I eat. That is called a 1:8 ratio. In the morning I need a 1:5 ratio, and 1:10 in the evening. Your ratio might be very different from mine, you can use trial and error to find your ratio(s). Your correct insulin sensitivity level is needed to do correction boluses when you have high blood sugar. I need 1 unit to lower my BG 20 points. Yours may be very different. That can vary throughout the day. The book "Using Insulin" by John Walsh is very helpful with all this. John also wrote the book "Pumping Insulin" if you ever use an insulin pump.