Aspiring rapper KEVIN FEDERLINE is so busy with his fitness and recording schedule, he only spends time with his wife Britney Spears and their baby Sean Preston at weekends. After spending the first year of his married life playing golf and partying in Las Vegas, Nevada, with his pals, Federline has been holed up in a Los Angles recording studio, preparing his assault on the charts. In an interview with American magazine Blender, Federline claims he is so busy recording songs, he barely has any time for Spears and six-month-old Sean Preston, as well as his two older children from his previous relationship - KORI, four, and 20-month-old KALEB. He says, "I have no golf game anymore. "Monday through Friday, I get up at 7.30am, train at the gym for two hours, then go to the studio. I have weekends off to see my kids and to spend time with my old lady."