I think in the beginning popular support would have held. People, me included, were really scared and opposed to accepting the invasion. Now after the years support for Ukraine is much lower, Ukraine is set to lose the war unless some major shift in policy occurs and the half baked measures not only made everything much more expensive, but a lot of it even benefitted Russia by raising the gas price w.o. cutting them out of the market.

However solving the situation probably would have required a one time wealth taxation, putting energy related businesses under tighter control and scrutinizing sanction evaders. Of course that is not wanted in neoliberal countries.