diabetic here!
If you're able to, I would encourage you to try to get access to a continuous glucose monitor sensor and use one.
A single data point isn't super helpful but being able to get a line graph over the course of 1-2 weeks will tell a much better story.
You also don't need an Rx to get a sensor now; there are some OTC options: https://www.goodrx.com/classes/medical-supplies-and-devices/otc-continuous-glucose-monitor-faqs