Russia's population is 140 million. They're not going to run out of people. 17% of those or about 24 million are fighting age males (18-44). If you really need to you can definitely recruit 15-60 and woman.

Not sure if this is what you meant by logistics.

If you're thinking about supplying and maintaining their physical presence in Ukraine it doesn't look like that's a problem either.

"As of 2024, Russia produces about 3 million artillery shells a year, nearly three times the quantity from the US and Europe." - https://en.wikipedia.org/wiki/Arms_industry_of_Russia

They're also still exporting weapons though significantly less than they used to export.

Maybe they can't sustain 10 years of war with the west continuing or increasing their level of support, assuming Ukraine can, but they are nowhere near being forced to stop [the] war.