This goes missed a lot in debates about conscription. The Iran war in the US and the Ukraine war in Russia enjoy very little popular support among military aged men. This is in stark contrast to WW2, and even in Vietnam there was still a strain of thinking of draft resisters as cowards. But wars in this day and age enjoy a shockingly tiny public mandate, and it's entirely possible that governments can only do a draft on paper. Putin is practically unable to push further mobilisation because the first round provoked such stiff violence and resistance.

There is another option too: cooperate.

Any ruler wants active units of production (humans extracting money or gold or food), and for that it has to bring some sort of stable life environment and not be too greedy so people don't try to revolt.

Whether you get such through political negotiation before or after a war, or through a vote, or through a revolution, is the same as the end.