Doubtful. Rush's loss of revenue doesn't hurt him as much as Levin's, so he doesn't have as much of an incentive to come on board the Trump train.
I still listen to Rush when I can. Haven’t heard him bash Trump; most of the time he’s doing that to Hillary. I don’t believe he is a #neverTrumper, especially since the convention. Levin on the other hand has been out and out nasty against Trump. I used to listen to him more frequently than Rush - not now; I switch him off when he comes on.