JAY-Z is a changed man! Since welcoming twins Rumi and Sir with wife Beyoncé on June 13, Jay has “turned in to a totally hands-on father,” a source told In Touch exclusively, and explained that, although he adores daughter Blue Ivy, 5, the rapper, 47, rarely helped when it came to things like diaper duty. “This time around, he does it all. He changes diapers, feeds the babies, and puts them down for naps.”

Despite rumors the father-of-three had cheated on Bey, we’re happy to hear the two are settling into their parenting roles once again. Beyoncé, 35, couldn’t be happier. “She loves that Jay has stepped up to the plate in the parenting department,” added the source, “and thinks he’s a great dad.” So sweet!

MORE: Beyoncé and JAY-Z Are At War With Neighbors Brooke Burke-Charvet and David Charvet (EXCLUSIVE)

MORE: The Real Reason Kanye West and JAY-Z Are Feuding Will Leave You Picking Sides

The delivery of the twins wasn’t so easy, however. Previously, In Touch reported that the day was chaotic, even though the pair had conducted trial runs with her security team before their arrival. “There was a lot of drama, specifically with the Knowles family,” said a source at the time. “Beyoncé made it clear that she wanted this day to run smoothly, but her family just did not listen.” They added, “This was supposed to be one of the most touching and beautiful days of her life, but Beyoncé was so stressed out because of all the fighting.”

Luckily, things seemed to have calmed down since then, and Blue is ecstatic about being a big sis. “She’s very proud and very excited,” grandma Tina Knowles said. “She’s a good big sister, she really is. She cares for them a lot.” Adorbs!

For access to all our exclusive celebrity videos and interviews – Subscribe on YouTube!