Actually, it's very simple. There is a successful model before us: President Reagan's approach to the U.S.S.R.
One, he targeted the U.S.S.R. as a main adversary, not its proxies, because after you defeat the proxies, you still have to face the main adversary.
Two, he contested the U.S.S.R. via escalated military spending, which eventually bankrupted the U.S.S.R.
Three, he pursued an effective economic containment strategy.
Four, he undermined the legitimacy of the U.S.S.R. by giving visibility and support to Eastern European dissidents.
To succeed, all four measures must be pursued simultaneously, not separately.