People have different idea but roughly the Ukrainian plan seems to be hold the current lines approximately, destroy Russian assets and work on Russia collapsing economically to the extent they have to pull back a bit like their Afghanistan experience.

Anders Puck Nielsen on that https://www.youtube.com/watch?v=lNZ56C-f4a8&t=422s That's starting at the Ukrainian plan but it's worth watching the whole vid if you are interested.