@CAPE doing anything tonight due to the possible freeze , as in protecting your new grass, or is it established now ?
Some folks were talking about watering the lawn at sunset tonight which add 2 to 4 degrees of heat to the grass canopy reducing the odds of killing grass seedlings.
I believe I read once new grass is over 3 inches, and has been mowed twice, that 30 degrees F is not an issue, ( some ag folks say even 20 degrees F is not an issue ) meanwhile root growth continues into December.