As it Happens, Tikhistory has reached the 22nd of November in episode 38 of his epic Battle of Stalingrad series.
It shows what happens to a force hollowed out by trying to keep attacking when they have no proper reinforcements and shattered logistics.
This is why I expect the Russian front to collapse when the Ukraine forces go on to the offensive.
Not that I expect an encirclement, rather a general collapse of the front and rout like that of the Italians in North Africa as a result of Operation Compass in 1940/41
I wish I shared your optimistic assessment.
ISTM that the Russians are well dug in along the Southern front and around Kharkiv and dislodging them will be very difficult.
Meanwhile, they continue to advance, very slowly, on the Eastern front,