The discussion about insulin is this:
It may bring your levels down. It will bring your weight up. You will need more insulin then. Which will bring your weight up.
Why?
Because if you eat so many starchy things (bread, pasta, rice) which make your blood sugar spike, you will have to inject enough to cover it. Any excess calories will make you bigger. It's a fact. However, once you've stored all these cals as well, fat, which is where it goes when you don't need it, you might still have insulin in your blood stream in excess of what you now need - then you will want a wee snack to not get low.... That means extra cals. The bigger you get, the more insulin you would need as your body gets number to insulin as weight goes up.
So, in essence, you would have to keep your carb intake in tight control anyways.
I am type2 (possible 1.5) on insulin myself. This has been my own choice for various reasons, but I can tell ya right here and now, that for us big 'uns, unless you know what your body needs, get some wee walks or weights or footie in there, and decide to take control, you may end up with lower blood sugar, a bigger body and increased risks of all the other things. And unless you really want to devote the time to finding out exactly when in reference to a meal your blood glucose is likely to spike, you will end up going low-high-low-high-oops-darned-well eff it then.
If you're up for that, then cool. It is not easier. It may be slightly different. But the idea is the same at the end of the day.
Btw - all said to help even if I sound a bit stern. It's your life we're talking about.