That reassuring, thanksUnless you are attending banquets, the difference between the beginning and end of a simple meal is unlikely to affect the general impression of how your body is coping. You body does not work that precisely, nor that quickly.
Oh yes, On some meters (inc SD Code Free) you can mark readings as pre meal, and the next reading will be stored as an after meal. And the meter will give a reminder to test. I believe this can then be used by some meters when producing reports. Instead of just having a list of readings.I would make the checks 2hrs apart, (so 2hrs after the start of the meal) because the premeal check is automatically timestamped 🙂