| Are you sure you are type 1? Not a type 2 or LADA/T1.5? Have you tried something like metaformin, might be worth suggesting to your doctor. Switching simple carbs for complex carbs such as brown bread, brown pasta and brown rice would help you. I would eat low carb until you can sort this out, such as 150g of carbs a day or less. Do you have an I:C? That would be a good indicator as to how insulin resistant you are. Sit down and write down everything you eat with pre-meal and post meal bg checks. Start looking for patterns, be methodical and work through it. Drawing graphs can help you see these patterns y axis would be bg and the x axis would be time of the day. Draw two lines for a lower and upper bound bg ranges. Doing this for a couple of days or a week may help you figuring it out. If it’s just poor absorption, an example of this might be that you go very high at 1 hour into a meal and then 3 hours later you return to normal. Testing 1,2.5,4,6 hours after you start eating will help you to nail down exactly what is happening. See the example created by winglucofacts, although you could do it hourly with carbs eaten: | 
