A CGM or Libre will show you when the peak occurs.
Two hours, for seeing if you are within 2mmols of your pre meal test.
The only time you take a one hour test is to find your spike (ish)
If I have carbs, my spike is around 45 minutes depending on what I ate.
Also this is just as important, keep a food diary. What you had to eat, pre meal and two hours after first bite. Carb count and repeat a few days later, I have kept a food diary since 2012, it has been a great tool and will give your health care team, what is happening when you eat.
I have noticed that a food spike declines about 1-2 hrs. after taking glicylazide. At such times, I wait until the spike (over 11 up to 14 for example) is 6-8 before eating anything. I wonder how you and others handle spikes, and if "eating by the meter" decreases blood sugar complications. Thank you for reading.
Hi, because I'm in or around normal levels all the time. I don't need to deal with spikes.
However, through my experience and experimenting, once you have found your spike, I would not be too worried about keep searching for it.
For me the two hours is more important, as the eat to your meter, is usually a two hour reading. The within two mmols is the detail how you measure your improvement.
Taking glicizide will probably reduce your fasting and Hba1c levels if your dietary regime is low enough, the drug is designed to intentionally help you cope with the high readings you are getting. But be careful because after a while with low carb, you could be getting or close to hypo levels.
I know that it's difficult and confusing, but you will get the best out of your meter.
Keep safe