https://www.rushlimbaugh.com/daily/2021/02/24/ron-de-santis-earns-his-honorary-degree-from-the-limbaugh-institute/
Rush never claimed to be 100% correct, and that was long before DeSantis betrayed Trump.
Also, in his final printed release, Rush praised and thanked Trump.
So there.
That was then. Ron would have disappointed him.