Sir Elton John has taken a while to “adjust” to life without touring. The 76-year-old singer finished his ‘Farewell Yellow Brick Road’ concert series last summer, five years after it began, and he admitted he is only just getting to grips with life at home with husband David Furnish and their sons Zachary, 13, and 11-year-old Elijah. He told ‘Extra’: “After you run around the world nonstop for practically your whole life, it did take a while [to adjust,] but we’re settling in now.” But the ‘Tiny Dancer’ singer isn’t slowing down as he’s got a number of work projects in the pipeline, though he …