The only party that's escalating the war here is Russia. NATO is doing everything it can to not escalate it, but to contain it. If Russia had its way, the war would have spread over a far larger part of Ukraine, and Russia has made it clear that if they're successful, other countries will be next.
To contain this war, it's vital that Russia fails. But it's also vital that it doesn't turn into a large-scale NATO vs Russia war, because that increases the chance that it will turn nuclear. It's a tightrope, but supplying Ukraine with everything it needs to contain the Russian invasion is probably the best way to do it. If that doesn't work, expect direct NATO involvement.
To contain this war, it's vital that Russia fails. But it's also vital that it doesn't turn into a large-scale NATO vs Russia war, because that increases the chance that it will turn nuclear. It's a tightrope, but supplying Ukraine with everything it needs to contain the Russian invasion is probably the best way to do it. If that doesn't work, expect direct NATO involvement.