No. Trump's contract with Palm Beach when he made Mar-a-Lago a social club says that he can't live there more than 3 weeks per year (PB suspended the agreement for the presidency). See bottom paragraph page 2 https://www.politico.com/f/?id=0000015a-99cf-dcd4-a5ff-bdefa9050001
參考: Making it a social club drastically reduced his taxes. If he wants it to be a full time residence, he'll need to pay the full residential tax rate.
Probably, until he finds an island or goes to jail. He's not supposed to live there full-time---but Trump always does whatever the hell he wants and never worries about the consequences.