Before King Charles told the public about his cancer diagnosis, he made sure to fill in his sons, Prince William and Prince Harry, about his health woes, a news outlet reported on Monday, February 5. According to a source, Harry, 39, will return home to the U.K. to see his father in the coming days. The insider also revealed that Charles told his three siblings — Princess Anne, Prince Edward and Prince Andrew — about his health status. As OK! previously reported, Buckingham Palace shared the scary news just days after he underwent surgery for a prostate procedure. “During the king’s recent hos…