I tested, like, eight times a day, not by choice. I took five shots a day, but I was still all over the charts, and I was doing everything possible. I ate everything I was supposed to. I counted carbs exactly and it drove me nuts, but I did it anyway. With the pump now I only have to test four times a day.
Most people have it so that their insulin is based on how many carbs they eat.
I take a certain amount per meal for my blood sugar, then eat a certain amount of carbs. If I want less, I know before, so I take a little less insulin. If I want more, I just add a little. Yeah, I take NPH, regular and Humalog. Three times a day.