Scores of fed-up staffers on Jack Schlossberg’s campaign for Congress are fleeing his chaotic “dollar-store” run for office, according to a bombshell report that also revealed the nepo baby ditched key meetings to catch up on his beauty sleep. The grandson of President John F. Kennedy, who is running to replace retiring Rep. Jerry Nadler in New York’s 12th Congressional District, is mounting a political bid plagued by erratic behavior, mysterious no-shows, and constant staff shake-ups, sources close to his campaign told the New York Times. Sources have raised concerns over the 33-year-old scion’s fitness for public office ever since he bailed on a series of interviews with donors and media hours into the first day of his campaign launch in November.  Jack Schlossberg’s congressional campaign has been plagued by erratic behavior, no-shows, and staff turnovers, the New York Times reported.…