@kev-w you have been lucky with a manageable form of diabetes. Of course you must have put alot of hard work into it everyday. With hormone influences, illness and stresses. Like us all.
I'm finding some are lucky than others. If you had been a brittle type1 and not even your endo being able to advise on a more stable routine and god forbid weight gaining daily overdosed glucose not being cleared from your system effectively, then you would be desperate of a solution.
I think that's where Dr Bernstein is aiming his advice. Not easily managed diabetes with a regimented insulin treatment or just metformin or diet.
I'm pleased your management is spot on.