It’s an interesting question - and I think it’s different for me because I will always need to check on an ongoing basis. Personally with insulin involved I would treat a 4.0 with something high glucose to guard against a dip, on top of the meal itself.
I generally give myself leeway with all these things. So while recognising 2-3 as ideal I would be happy-ish with 4, or thereabouts.
If I were looking for knowledge about which sources / portion sizes of carb which suited me best that I could use on an ongoing basis with less frequent ‘maintenance’ BG monitoring, then 2-3 seems a good limit. That way, if I were mid-range to start with I’d still only get to 9ish. Still fine by me.
Additionally, in the beginning it would mean I could still gather useful data. A rise of 10-11.5 still makes it a ‘good’ meal, even though 11.5 is higher than ideal.
Just my own thoughts. Glad you’ve found an approach that works for you. 🙂
I think there is possibly a difference in the types of diabetes that affects the rise in BG.
Even between type 2's to the amount of carbs and insulin response.
For type 2, I found insulin resistance, and insulin response varies, at diagnosis, I could produce insulin, no idea on initial response, but definitely ok on the slower response.
Insulin resistance varied depending on what I had been doing.
So rises were fairly unpredictable.
But, I could probably have a slow graze, on a slow rise food, and my body would still be trying to keep to 8.5 ish, and even with a slow insulin response, succeeded sometimes.
A fast glucose source, it wouldn't keep up.
Now I've got it under control, my body's feedback maintains the ceiling at which it'll switch off insulin response.
Say 8.5.
I can't actually change that.
But I don't know that bringing it down a lower level would have benefitted me, apart from stopping me eating food my body could naturally still cope with.
I agree if you are starting higher, and a rise would take you over 8.5 it's not ideal, then I'd be looking for a lower rise, but still expecting my body to be targeting the drop to 8.5 if I had to eat.
And to be honest, even if I didn't eat, a liver dump would probably happen, and take over anyway, depending on insulin resistance.