My strategy would be to re-supply and bolster Taiwanese forces on Taiwan as much as possible without direct US action against China, almost exactly like NATO with Ukraine. Naval re-supply would have USN escort and air re-supply would have USAF escort. No firing on PLA forces unless US escorts are attacked. No attacks against the Chinese mainland.
With this, minimal/maximal effort, the US could say that it upheld its commitment, technically, while avoiding the gravest of unintended-consequences. This could be spun as a political “win” after the inevitable occurs. “We provided Taiwan with the best equipment the world had to offer; however, despite putting-up a determined, heroic, and honorable resistance, the forces of freedom and democracy could not overcome insurmountable odds. Today is a dark day for all freedom-loving people of the world!”
In a sense, Ukraine might be the model-test for future western ‘interventions‘. All the more reason that they keep pouring-n resources.