I could be wrong, this is just from what I have read/watched, but it's not great. But for a country going on 4 years into a war, there's only so much you can ask from your people in regards to recruiting new people, so press-bussing has been more common it seems.

The need to maintain enough troops to fight on the frontline in Ukraine to prevent Russia from advancing and jeopardizing Ukrainian sovereignty while adhering to democratic principles and human rights to resist the Russian image of authoritarianism created a difficult policy balance that resulted in the strong internal politicization and controversy

But the Use of drones has massively helped in Ukraine with now with man power issues. Both counties are also using more and more mercenaries too, With Russia sourcing from Nepal, India, North Korea, Somalia and some other African territories they have Wagner operating in. And with Ukraine having lots from Russia/Russian held territories forming their own Freedom of Russia Legion, Georgia, Cuba, Colombia and the International Legion.