Well, that´s perfectly possible, but I don´t know if that´s true...but
if that´s so, I think he´ll be a good father like he ever´ve been. He ever loved children, as he said on "Many Years From Now"statements... As when he met Linda, she gave sometimes little Heather to Paul nurses her while Linda went to work, and he liked to do it. He wrote "Hey Jude" inspired on Julian Lennon which was entertained sometimes with children´s play by Paul, then once John asked him:"How can you do that?? I just can´t do that!!" , so Paul just replied: "Just...playing like a child!" When he was a teenager, he and brother Mike were baby-sitters of neighbours´childrens. And finally, he had three kids with Linda, and surely the coming of a new baby would be like a gift for him at 60.