It looks like all the drama is at the top end on the Eastbound (London) side, with lane closures and junction closures from 4 to 2.
Westbound, there's only one lane closed until J4, where there's 3 lanes closed to 4A.
Location : The M3 westbound between junctions J1 and J2 . Lane Closures : Lane one will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:00 from 21 November 2017 to 24 November 2017. Schedule : From 23:00 on 24 November 2017 to 05:00 on 25 November 2017. Lanes Closed : There will be one of three lanes closed.
Location : The M3 westbound between junctions J2 and J3 . Reason : Roadworks scheme. Status : Currently Active. Period : from 20:01 on 15 November 2017 to 05:30 on 22 December 2017.
Location : The M3 westbound between junctions J4 and J4A . Lane Closures : Lanes 1, 2 and 3 will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : From 20:00 on 21 November 2017 to 05:30 on 22 November 2017. Schedule : From 20:00 on 11 December 2017 to 05:30 on 12 December 2017. Lanes Closed : There will be three of four lanes closed.
Location : The M3 westbound between junctions J4 and J4A . Reason : Roadworks scheme. Status : Currently Active. Period : from 20:01 on 20 November 2017 to 05:30 on 12 December 2017.