IMO the Russians are spent. They wasted the best equipped and best trained forces they had 6 months ago. All those gains have mostly been erased. And, if the figures are even remotely accurate and the Russians lost 50,000 to 80,000 KIA/WIA then game over. Now they are relying on criminals, conscripts and mercenaries with no real training led by incompetents. I wouldn't be concerned with some local Russian gains vs the overall strategic advances the Ukrainians have already made. A cold winter of ill-supplied and poorly led replacements will likely lead to more Russian retreats and failures.