He reportedly really wants to "do his bit" to fight the pandemic.
The pair won't be senior royals from Wednesday (UK Time).
The president won't offer security for the royal couple's reported new home base.
Harry was seen touting his wife's skills to the Lion King director last year.
The 71-year-old is displaying "mild symptoms".
Penguins, princesses and smoking weed were said to be among the topics.
He allegedly said Trump had "blood on his hands".
A last-minute decision saw the pair excluded from the royal procession.
"Forget the Fab Four, it's now the Frosty Four."