I suspect they will go on your A1c results, rather that spot readings. As the A1c is an average over 2-3 months, if the BG spikes, it's not going to make a massive difference overall. Mine can go up to 10 or 11 two hours after a meal, but my A1c is now in pre-Diabetic territory. I'm not pre-Diabetic though, as having been diagnosed as Diabetic and being on medication too, I can't 'turn back the clock'.
From my personal experience, the two hour readings are very proportional to the carbs. If I have a 40-60g carb meal it goes to 10 or 11. If it's a
0g meal, it only goes up to around 8 or 9.
I think you may need to try different meals and test also, as not all carbs are equal, we all react to different carbs, well differently. I find rice, pasta and anything sugary raise it, but OMG, potatoes, they really do spike it. I still have them, but small portions. I've actually got quite adept at predicting my BG levels based on what I eat, I wish I could do that with the Lotto numbers
🙂.