Looks like Lemmon is suggesting pre-emergent now, and not waiting until February.
https://ktrh.iheart.com/featured/gardenline-with-randy-lemmon/content/2020-01-15-apply-pre-emergent-herbicide-early-this-year/
https://ktrh.iheart.com/featured/gardenline-with-randy-lemmon/content/2020-01-15-apply-pre-emergent-herbicide-early-this-year/