Dash DPF gauge

[Mattman]

After about 11,000 miles haven't seen my gauge needle move off of clean. Truck hasn't done a Regen parked, does them going down the highway. I have only seen hot exhaust light come on once while stopped at a red light. If my fuel economy on the dash starts reading lower than it usually does I assume it is doing a Regen at that time.
Was hoping gauge would be a little more accurate.
I try not to idle my truck. Uses about 5 gallons DEF every 1,000 miles or so.