My story is: I had a really bad crash after eating a chocolate, which never happened before. That prompted the bloodwork, which shown that A1c was not where it's supposed to be.

I bought CGM myself, without any doctor's input. Didn't know they exist before reading some selfhelp book which my wife found.

Echoing another poster, it's eye opening how some of the foods you'd never think of, are spiking glucose levels.

Overall, after both me and my wife adjusted diet, much better energy through the day, no crashes.