Keep in mind T1 and T2 are vastly different and its really sort of messed up to give them the same name. T1 is genetic, you get it through no fault of your own. T2 is more or less shitty eating over many, many years.
I'm a T2 diabetic because I ate like an idiot for many years, junk food and sugar every day. However I am functionally cured of T2 diabetes via a low carb diet, been on it for about 9 months and my blood sugars test just like a normal person whether fasting, after a meal, 2 hours after a meal, or before bed time. Both with a home blood glucose testing kit (I use the TRUEresult one, bought it on amazon for $15 and 50 strips cost like $15) and with blood drawn at a lab every 6 months. I say functionally cured because I have to eat low carb for the rest of my life to keep diabetes at bay, if I reverted to eating carbs and sugar I'd be back to needing medication and more closely monitoring my blood sugar levels.
Its worked wonders for me but of course every person is different YMMV etc. I was testing at 180-190 post meal before I started keto, now I test at 85-100 24 hours a day no matter fasting, post meal, workout, etc (as long as low carb/sugar). Also lost 45 lbs so far which helps a lot. For me
http://reddit.com/r/keto was a great place to start, but there are a variety of ways to go low carb like paleo, south beach, atkins, etc. Just anything that limits your daily carb and sugar intake to very low levels. This is all for T2 adult diabetes, I don't really know much about T1 other than its very, very different than T2.
Still need to talk to your doctor, monitor your own blood sugar levels, keep an eye on your cholesterol levels and kidney functions, etc.
This was a great video I watched to understand more of the science of T2 diabetes and insulin
https://www.youtube.com/watch?v=UMhLBPPtlrY