Guidance overnight has ticked considerably lower with snowfall totals. Part of that is the quickness of the system. The other part is the banding looks extremely confined and less widespread now.
In any event I still think a general 2-5" seems like a good range for this one with a couple isolated areas under the banding seeing 3-6/7".
Expectation here in Warminster set at 2.1"
Eta: keep in mind when these bands develop, areas adjacent will see subsidence and weaker radar returns