Ukraine is dead as a nation. Over half of its population has fled. The US is paying for the government, its literally the 51st state. The military is collapsing and is grabbing men off the streets.
Russia is going for the Russian parts of Ukraine, and an offensive is imminent. The Russian Army will likely strike from the direction of Chernigov-Kiev, Sumy, Kharkov (to encircle it) and Zaporozhye, thus breaking the AFU positions near Donbass. Belarus will be part of the action.
The tempo could be rapid and surely will be in the opening stages of operation but the objective isn't to do a blitzkrieg and roll over the AFU, pushing back the enemy and controlling the ground by any means necessary, it is to increase the kill count of Ukrainian troops and make it impossible for them to sustain those losses. This will force them to fight in different and unprepared areas like Kiev and Lvov. The goal is to split Ukrainian forces and make it impossible for Ukraine to keep a core army or reserve units.
This will literally end the possibility of Ukrainians to fight back and launch offensives and also eliminates the possibility Ukrainian would be able to fight as an organized force, thus causing them lose the possibility of launching any future initiatives. It will lead to inability of Western support except for direct intervention. This will change the course of the war because there would be never be enough resources to send to the front, making it impossible to concentrate troops or use them in an organized fashion.
Officially, Russia may declare war. So the chickenhawks here may finally get the chance to do their duty and ensure Aisha and Tyrone flood into what's left of the Saloreich.