Doubt it. Attacking Russian homeland would be stupid now that the EU is winning. It would only make it possible for the Russians to finally get off their butts declare war and order a full mobilization.
Except that:
The military command of the Russian Federation suspends the sending of new, already formed, units to the territory of Ukraine due to the mass refusal of volunteers to participate in hostilities. This is stated in the operational summary of the General Staff of the Armed Forces of Ukraine on Facebook on Monday, September 12.
The General Staff notes that there is a growing distrust to the higher command in Russia, due to which a large number of volunteers categorically refuse the prospect of service in combat conditions.
https://ukranews.com/en/news/881702-russia-suspends-sending-of-already-formed-units-to-ukraine-afu-general-staff
When you start a war, the other side gets a turn.
Russia should understand this, as should the US.
To say that Russia can not be attacked after attacking a sovereign neighbor is stupid.
LOL, where the EU is winning and how the win looks like? The explosions are said to be sonic booms.