Sir Elton John has admitted “I don’t know how much time I have left”. The 77-year-old musician spoke about life and death in his upcoming documentary ‘Elton John: Never Too Late’ and revealed he thinks about his own mortality now more than ever. According to The Mirror, in one scene from the doc, Elton says: “I wonder what is going to happen to all of my stuff when I finish? This is the latter time of my life. I don’t know how much time I have left. “You think about that more when you get to my age. You think about life and death. You think, ‘Well I just want to be where I want to be now’. “I …