King Charles’ doctors are allowing him to take a break from his cancer treatment to fly to Australia for a high-profile royal visit next week. RadarOnline.com can reveal the royal family is worried the 75-year-old monarch is taking an unnecessary risk as his health continues to decline. The king will continue with his ongoing cancer treatment right up until he flies and will pick it right back up as soon as he returns to the U.K. Charles intends to “squeeze in” a 30,000 mile, 11-day door-to-door trip in-between his treatment sessions. He will have a packed scheduled, attending up to ten engage…