No sorry that was a rushed post. I don't believe that everyone who is diagnosed with t2d has the same condition. I was diagnosed 11 years ago and don't believe that I don't produce enough insulin, I believe that I am insulin resistant so I am only talking from my own perspective. My diagnosis...
The answer is it doesn't work if your insulin resistant. Other than by throwing so much at it that it has a small effect. That was my experience at any rate.
They put me on insulin, it worked a bit (lowered my BG a bit) for a while then stopped working so upped the insulin, slight improvement...