I've been concerned since the beginning that Russia's military would have time to adapt. If nothing else, there's the natural selection effect as the proportion of survivors rises. I also believe that we should be countering this danger by throwing everything into supporting Ukraine. A long war also increases the civilian misery. Europe should put everything into defeating Russia quickly and completely, to avert yet more aggression for at least a generation. This means eliminating the generation of military men who could train a new army.