I started on Dexcom CGM first and then OmniPod pump about 3 months later about 4 years ago.
Yes, I, too, was very reactive with the trend arrows at first. I have to say, I was really stunned by the numbers I was seeing, so I think it was only natural to be reactive!! I had no idea I would rise and fall so drastically in between finger sticks! I still am reactive when it is going straight up! Hence, as others @Michel mentioned, I sugar surf, too. I tend to take the correction then watch the CGM trend to see if a temp basal reduction is required. Being able to use the temp basal on a pump is one of the features that cannot be done w/ MDI! Yes, it does require dedicated monitoring, but as a T1 for me, it is the only way to keep tight control. Of course, we all want to be stable, but if we aren’t then sugar surfing is the next best strategy
I check my CGM often (maybe every 5 minutes!) when I am not stable, for example after dinner, or after exercise. I use a watch w/ Dexcom so it is really easy to just glance at it while out and about, during exercise, etc. While working, my Mac displays the value in the menubar so I can easily just glance at it. So when I am stable and nothing is changing in the environment to make me unstable (eating, activity, stress, etc.), then I may not check for a few hours at a time, but as I said, I may glance at the menubar from time to time. If I see a big change then I’ll try to figure out what is causing it, do a finger stick on the meter, and then make an adjustment, such as set a temp basal on the pump, take a bolus correction, maybe eat something.
Sorry for the long answer! I’m just thinking it out as I write!