You can now get a CGM over the counter ($100/mo). You'll want a finger ***** tester as well so you can calibrate the delta on the CGM. Eat foods that limit spikes. If spikes occur you can increase activity after eating to stunt spikes fairly quickly.

Freestyle Lingo
Dexcom Stelo

Lingo you have to scan and it records 8 hours of data.
Stelo is a constant feed of data.