It's become a "meat grinder". The drone and missile warfare of the future, with "advisers" there from most countries monitoring how it operates in a live arena. For future conflicts !
I've heard reports that they are running out of recruits from the poorer and rural districts.
Also, that they are not currently keeping up with replacing killed or injured soldiers.
If the kill rate continues, something will have to change for Russia. Either it just collapses, or they will have to recruit not so poor/rural personnel.
Perhaps Ukraine would be better to cause injury rather than fatality. The cost of dealing with injured soldiers is far more burdensome than killed ones.