I can only speak for myself here... but maybe it'll help. I went on a fairly sudden low-carb high-fat regime with fasting to boot. It made a huge difference to HbA1c - my goal was to convince my GP within a month that this was the right form of treatment rather than metformin and statins.
I was hugely confused about what my bloods were doing, and 9 months later, I understand more, but am probably more confused, because there is so much to learn..
The biggest thing for me, was realising that - in order to be where I was - I must have some level of insulin resistance. Putting aside for a second what that means - just think in terms of alcohol or coffee resistance, it was going to take a little while for my body to become more sensitive..
in other words, if you're drinking a bottle of wine a night, 10 days isn't enough time for your fundamental relationship to alcohol to change..
So, you need to give your body time to become more sensitive to insulin.. in the meantime, don't worry, because you are making progress toward that every day (at least it's that way for me) - dawn spikes also - everyone is different, but your body is pumping out hormones to get you ready for the day, and for the same reason, you're still out of balance..
(for what it's worth, I still don't understand at what point your body creates new glucose, or switches to producing ketones - I see both, and I don't really understand the patterns... yet) -
For me, it was hearing from someone I really respect in this field, saying, "it could be 18 months to two years to become insulin sensitive" - that took the pressure off, just meant that I could stop worrying day to day, but start to measure things in a way that I could see the longer term trends..
And - if you are on a keto diet, you will know your glucose and insulin will be as low as possible most of the time. Raises in blood glucose can still happen, even if you are not eating sugars and starches and your insulin level is low.
Also - (and I definitely went through this) - be aware of "keto flu" - again, simple metaphor, but it's like going cold turkey - your body just doesn't care, it wants those sweet sweet carbs... how dare you deprive it?
.. it was only a couple of days for me.. but I did wobble..
"the case for Keto" by Gary Taubes is a great book for this - he's a journalist rather than a doctor or pushing a health product - just interesting reading, and will definitely explain better than I can.
