Rice can spike you big time and then you had a piece of fruit which can also spike you, although apples are usually not to firce for me, but I am not you.. If you are trying to see the difference, cut out all bread and grains for a while, all processed meats and foods, and all fruits. Certain kinds of beans you might find in chili can raise you. You can have some 90% chocolate as a night snack but for now you want to see how a strict diet can lower you overall.
Way most diabetics test is upon waking, one hour and two hours after a meal. For a while, you will want to test before lunch and before dinner and also the one and two hours after. A lotta test strips but worth it.
There are some things you can eat that are often carb neutral like eggs and bacon, bone broth and others.
Metformin can be taken if you have tummy issues halfway through your meals and you can spread out the three ERs.
There is a low carb forum on diabetes UK and you can take a low carb course for free on this website. Everybody has to go through the process of testing what spikes their individual bloodsugar because we are each unique.
It's a process