Russia is currently in the weakest position it has been in years, and is weaker than it will be when it gets to rearm following any cease fire. If Poland, or any Russian neighbor really - believes Russia is a long-term threat, now is the time to go on the offensive. You don’t have to invade, just start pulling the same <deleted> Russia does. Let your aircraft get really close to their border. Go over their border then deny it. Shoot down their drones over Ukraine, then deny it. Or say they were in your air space. Or they were headed that way. Russia doesn’t want a two-front war.