No, that's a really stupid idea. Upside: maybe the Ukraine war ends sooner. Downside: global thermonuclear war.
As I see, such constant displays of weakness may provoke Putin to some wider war. Russian society has transformed. There can be only war in the future. Just look at his government budget: https://www.theguardian.com/world/2024/sep/30/russias-defenc...
It would also be a bad idea. It would add very little in terms of strategic capability, and its effect would be largely symbolic. If anything it would simply stoke the aggressor's internal and external propaganda, and pull more willing conscripts over to the front. It would also cost a lot of money, which would be better spent on drones and shells.
Sometimes the coolest, fiercest response to a provocation is simply not to answer.
Though if there were to be a response, a much better one would be: "Just for that, here's another $200B for Ukraine."
Nuclear Proliferation only increases the risk of conflict, not decreases it.
The Cold War was a bipolar conflict. Rampant nuclear proliferation will not result in a similar situation and will not have the same result.