Sissies at this age need strong feminine role models. Choose one that most closely approximates the values you wish him to exhibit, then surround him with images and messages that reinforce that image. He should henceforth be strongly encouraged to adopt the look, speech, behavior, dress, accessories, interests and attitudes of that image.
Tip: Chose a role model that is most opposite of his former ‘boy’ persona. For example, if he was a ‘jock,’ turn him into a cute little debutante. Or if he was bookish, transform him into a perky cheerleader!