Has your doctor mentioned the need for insulin? There are basically two types of insulin: bolus, which is your mealtime insulin, and basal, a long acting insulin.
Before we get any further, I’d like to clarify this does not mean you have Type 1 Diabetes.
When glucose levels remain high over a period of time, a type 2 diabetes patient may be prescribed a basal insulin. This would be injected once daily. The insulin is more than likely in addition to your oral medication. When this isn’t enough to stabilize your glucose levels, mealtime insulin can be added.