Hey,
IF you NEED insulin, stopping WILL kill you. DKA and kidney failure is a lousy way to go.
You clearly don't trust your doctors. I don't blame you. I hardly trust mine and I've had far better luck than you. Sometimes it comes down to that, luck.
If you can't trust them that only leaves you to figure out what is going to keep you alive and well.
That you have gained that much weight so quickly suggests that you are eating too many carbs and taking too much insulin.
If that makes any sense you might try cutting way back on your carbs and see if you can't reduce the insulin without having your Blood Sugar numbers go up.
If I was in your shoes I'd go full out Atkins, totaly eliminate the carbs, at least until I saw how it affected my weight.
If you do that(even if you don't), keep track of your sugar. Testing before and two hours after you eat is a good place to start.
Watch out for lows. You may well have to cut back on your insulin to avoid hypos (they stink too ;-)
I have not gone total no carb, but I do find that limiting my carbs makes it easier to avoid highs and lows as well as hold my weight steady.
But you are not me. You are going to have to figure out what works for you.
Either that or trust your doctor to do it.
Tommy