You do not need to figure these things out on your own. Your diabetes care team
(your doctor, dietitian, diabetes educator, and other health care professionals) should spend time teaching you about it. Your team will help you make guidelines for how much insulin to take and when.
You can find an ADA Recognized Program at diabetes.org
or by calling 1-800-DIABETES (800-342-2383)
Keyword: diabetes blood sugar control