@Art Of Flowers I don't understand why you ask questions like this, since your profile says that you have reversed your Type2. If you have already got back into non-diabetic HbA1C numbers, then surely you already know what you can eat and how high it will raise your BG etc.
What those of us who are old school tend to use is the 2's. using a BG meter rather than a CGM, unless I know I've eaten some fast-acting i.e simple refined carbs (which I have not done for over 4yrs), I just do/did 2 tests per meal:
Just before first bite, the 2hrs later.
I want the 2nd BG reading to be no more than 2mmol/l higher than the first one. The reason for this is because I want the roughly equivalent response to my meal that a non-diabetic would get to one of their normal meals (which would have many more carbohydrates).And the BG of a non-diabetic at 2hrs pots-prandial is usually back down to what it was before starting to eat. So, I 'm allowing a 2 mmol buffer to allow for the inaccuracy of the BG meter.
Thus if I used a CGM I would not be too concerned how high the temporary spike was from a moderate load of complex carbs, I would ignore the first 2hr after first bite.
When new to Low Carb, this is sufficient, but when Blood Glucose was starting to get under control, then I added an upper limit:
I want to keep all my post-prandial BG readings (normally just those 2hrs post-prandial) to a maximum of 8.0 mmol/L.
Now that is what I do/did in order to get my T2D into remission within less than 1 yr, in fact it was down into the pre-diabetic region in less than 4 months .
But some relax the numbers a bit and will accept a 3.0 mmol rise at 2hrs post prandial and a maximum BG reading of up to 8.5 mmol as an overall upper end of the target range.
