Ryan Reynolds claims he has tried breastfeeding his daughter.
The 38-year-old actor - whose wife Blake Lively gave birth to their first child, who is believed to be named Violet, last month - joked he is such a hands-on father, he even tried to feed the baby himself.
He quipped: "I gotta jump in and do all those sorts of things. I mean, I've even tried breastfeeding.
"It's frustrating for the baby and frankly disturbing for me ... not well is the answer."
The 'Mississippi Grind' star says life at home since his baby was born has been "great", but he is feeling the effects of sleepless nights.
He told People: "It's amazing that you can be that exhausted and that happy at the same time."
Blake, 27, recently admitted she is happier than she has ever been since she and her spouse had their first child.
She said: "This is the happiest time in my life, and I could say that every day. I often feel like, 'I can't believe I'm experiencing this.' "
And while the former 'Gossip Girl' star wants to enjoy their time with the new arrival, she is already thinking ahead to having more children.
She said: "I do want to just enjoy this moment. But I also feel like my first child is going to be the oldest sibling to the next kid, and that may change with each and every year.
"I'm looking forward to how one baby influences the other, and to my family as a whole, to every single chapter."