As I pointed out before, DeSantis doesn't have a key issue that can be leveraged to separate him from the base. Furthermore, a story has not come out about him shutting down a bridge in Miami to get back at a political opponent.
He's also lucky in that the liberal media hates him, and they're clearly preparing to start saying that he's worse than Trump the same way they started saying that Trump was worse than Bush.
The biggest risk to DeSantis would be if the liberal and leftwing media started portraying him as this man who could save the GOP. That would sink him immediately because their primaries are driven by a lot of spite.
That's the thing though, they'll likely wait until DeSantis gets the nomination to start the Trump rehabilitation. As of right now, it seems that even though DeSantis is more conservative on policy, the left still views Trump as more of a threat because of his disregard for system norms, and that will definitely hurt DeSantis among the conservative base if it continues. The one thing that could really change that is if Trump attacks DeSantis from the left. Trump did get some props from TYT and other leftist outfits for criticizing DeSantis on vaccines.