Georgia his a peak in mid-January of around 7,400 reported new cases, and then the case rate was cut in half, in three weeks, with no additional governmental restrictions. I don't personally see any change in habits around me, but it certainly is possible the numbers scared people into staying home more or avoiding others.
And the Holiday impact is possible of course, air travel was up considerably.
I still don't have a good explanation for these bumps and drops.