Hi, I had the same issues as you when I was first diagnosed with Type 1 diabetes. It sounds like your long acting insulin dose is incorrect. I have been type 1 diabetic for 26 years, and shamefully it took far too many years before a medical professional explained to me how important long acting insulin (commonly Lantus / Levimir) is to good diabetes control. If you get your long acting insulin dose correct, it will keep your background glucose under control, leaving you to just take rapid acting insulin according to what you eat. If the background insulin is not correct you will be chasing high sugars all day (fast acting insulin will never correct and incorrect background insulin dose). Getting the dose right is trial and error, I increased by 2 units per day until I got it right (but this was by agreement with my doctor). Suggest you have a chat with your diabetes specialist.