This time, I don’t think things will end in merely 12 days, in fact with how the supreme commander hold them in check, Israel and the USA would need to be prepared to last as least a few months minimum and I don’t think they are that good at long term preparation for anything nowadaysMost important thing if they really want to play the long game is to shut down all the main gulf airports for months. Via drones and missiles. They'll need to take a page from the Houthis.
Big caveat however.
We had the same conclusion last time, if they decided to fight long enough and take the economic hit, they could do extensive economic damage to Israel. But we got a 12-day war instead.

