According to Anders Puk Nielsen www.youtube.com/, Russia is probably peaking right now, because they have transitioned to war time economy, and they are restoring old Soviet equipment.
The problems for Russia are that their industrial output is declining, despite heavy public investments, in part because of sanctions, and in part because of worker shortage, and their Soviet equipment reserves are dwindling.
Hopefully the situation will get worse for Russia quickly, among other things they are allegedly beginning to experience an oil shortage now. Due to the strategic bombing from Ukraine.
So while Ukraine is hard pressed currently, time is most likely on the side of Ukraine. Which is contrary to what Putin counted on, when he bet the West would quickly tire of supporting Ukraine.