Ever since Kate Middleton and King Charles revealed they are both battling cancer, it seems like Prince Harry is attempting to step up to the plate and help out his loved ones. “It can get quite lonely for Harry in California without his lifelong friends around,” said the source. The redhead, 39, is even contemplating spending more time in the U.K. “There are no plans for him to move back for good,” the source said, adding that he’s more “open to representing the family at various events abroad. There are plenty of Commonwealth countries, such as Australia and New Zealand, that are a much easi…