I know it's nearly impossible to believe, but he devolving.
It's called narcissistic collapse.
Essentially he's becoming more paranoid that everyone will see the real him once the facade and faux image he's built for himself is peeled away, and it's happening a little more every day
It'll get worse
Trump: "Annie 'Trannie' Andrews is running against our wonderful Darline Graham for the Senate in South Carolina ... Trannie is not for South Carolina, and South Carolina must show, in the upcoming Election, that it is not for her."