@passionforpink
Treat that as a practice. At the beginning it is wiser to forget the actual levels and concentrate on the amount of rise from before eating to the 2 hour mark (2 hours after first bite) and using a detailed food diary.
Test immediately before eating
Test again after 2 hours
Look at the amount of rise from before to after
If it is more than 2mmol/l (preferably less) there were too many carbs for your body to cope with in that meal
Record the results next to the food in the diary
Repeat the meal a couple of times
Watch out for patterns. You can tweak the meal by either reducing the portion size of the carbs or eliminating some
It is trial and error.
Also note down in the diary what you did in that 2 hours (exercise, rushing about etc)
Once you are keeping those rises down you should notice all the before eating levels reducing, and of course the lower you start, the lower you finish!