Fast tracking to the Supreme Court is the best way to do that, IMHO. They almost always rule for him, and it’s 100% legal.
That’s not the point. Trump doesn’t need a green or red light from the courts do the work of the executive under the Constitution.
If he does, we might as well let the courts run everything and skip these messy election thingies. The sad reality is that, at present, they are running everything. It’s called judicial tyranny.