Presently is not that cold, I don't think they will freeze a lot. Winter are not that harsh in Ukraine.Definitivly hasn't got enought, considering that pickups worth pocket changes selling for serious money now.
Anyway, next two weeks will be freezing, means if the Russians wants to do anything then they have to do in the comming weeks
But It will be ''be cold or die'' if the Russian use winter to shot at all distinct IR signatures on the Ukrainian side. Soldiers will heat themselves near the front with woods and will use generators, they are good heat emitters to pick. During nightime it could be easy picking
After saying this, didn't see night drone footages and beside cruise missiles or lobbing of mlrs, I think I could count night video of battle on one hand...