Bradley Cooper and Irina Shayk welcomed daughter Lea just four months ago — but a source says that the 42-year-old actor is already gunning for a second child! “Bradley has wanted kids for ages, so now he’s racing to make up for lost time,” explains the source, “He doesn’t want to be an old dad.” However, the model, 31, isn’t ready to think about baby number two, as she’s more focused on returning to the runway. “Irina was at the top of her game before her pregnancy, and she’s worried that her career can’t weather another time out,” shares the source, who adds that parenting just one child is stressful enough for the new mom. “She often feels like a single parent because Bradley’s always working. Irina told him she’s not willing to discuss another baby until he steps up to the plate at home.” Hit it out of the park, Bradley!