The Russians will go all out to make some progress in the East in the coming weeks. If they get bogged down again, the risk of Putin lashing out with some sort of WMD really goes up. Just my opinion.
These guys are very doubtful that Russia will be able to mount an effective attack at this point, given manpower constraints, destroyed equipment, and bad morale.
Link: https://www.understandingwar.org/backgrounder/russian-offensive-campaign-assessment-april-9