Putin's biggest failure of the war was to get mobilization started 7 months after his enemy. If he did partial mobilization months before the war, the Russians would definitely be in much better strategic situation. At the very least all 4 Oblasts (K, Z, D, L) would be completely under their control with Ukraine's army in tatters. Instead his failure to maneuver Russian politics towards greater war support allowed Ukraine to amass many multiples numerical superiority in conscripted manpower and replace their 6-figure human losses.
I've been watching the Russian partial mobilization for the past 2 months. It reminds me of WW2. The US, British, and German army had good tactical and unit training but the Soviets were shoddy in this area. The Russian reservists right now are getting mediocre training at best, 2 months of refresher training in their districts and then they are shipped to units for further training. The training in Ukraine looks relatively local and improvised. The 100,000 men already shipped to Ukraine are going to very useful in the defense but less so offensively.
The Ukrainian reinforcements are even more poorly trained. The NATO trained 70000 only have up to platoon level, the rest are conscripts improvised training.
The Russians conducted sophisticated large scale maneuvers with Eastern Military District (50,000 men 6000 armored vehicles) and are planning big maneuvers in Belarus. This leaves 300,000 new troops in the interior without higher level formation training. Last week they inducted conscript class 2022-2023 with 130,00-120,000 men. The previous year (160,000-140,000) is already fully trained and with their units but are legally not allowed to be used in the war (yet!).