Unfortunately for Ukraine they defend brilliantly but they have no real method of attack and you can't win a war by gradually retreating you do have to counter attack and retake ground, if the west was serious about getting Ukraine through this they need medium and long-range capability, the ability to hit logistics and personnel targets in Southern Russia/Crimea and extend Russian supply lines, casualties further back.
If they can disrupt supplies, reinforcements and hit the Black Sea Fleet outside Ukraine that will amplify the problems at the front and give them a greater chance to retake ground.
On the other hand Putin must be confused and disappointed, there he is with his gunslinger walk, making threats to all and sundry, telling people how well things are going and how tough he is, meanwhile the rest of the world is wondering whether he has had a stroke, suffering from "COVID fog" or just had a mental breakdown.