Cynics would say that the current situation is close to ideal for the West; there is no reason to force a decisive win for the Ukrainians.
The Cynic would note that the banner of international law and human rights held up by the West are propaganda on par with the Great Russia narrative of the Putin: Both myths have a core of truth which makes them believable enough to create respective public support, but neither one holds up to scrutiny. In reality, the U.S. are happy about a very affordable proxy war that is occupying and weakening Russia without any loss of American life.
The cynic would say that, given this premise, there are two developments to avoid:
The war intensifies and involves NATO directly, becoming expensive both in terms of money and non-Ukrainian and non-Russian human losses. The war is already very expensive in terms of Ukrainian and Russian losses, but the West couldn't care less; Russian losses are actually an added bonus because they tend to weaken both Putin's standing and the military power of Russia. By contrast, the West is extremely concerned about Western losses which have to be avoided at all cost. To avoid misunderstandings: Western losses have to be avoided solely for political reasons; the fundamental, general nonchalance with which soldiers and populations alike are slaughtered has been shown sufficiently well by now. Western losses must be avoided solely because they would be a hard sell to the Western populations.
Direct NATO involvement would also increase the danger of an incidental territorial or nuclear excursion.
The war ends quickly. Ideally, in a continuing war, Putin should have a hard time on the home front, weakening his interior standing. The Russian military is slowly grinding through its supplies and human resources. The economic fallout is not as severe (if at all) as the U.S. hoped; either they have made their peace with it or there are efforts underway to extend and intensify the embargo.
Therefore, the West will continue to hem and haw and provide enough weapons to keep the conflict alive but not enough to end it. Two years ago I asked for exit strategies for this war; to this date, there are none, and there is no meaningful effort to end it. That is no coincidence: The Western governments don't want to end it.