Prince William is a father-of-three, so he’s definitely got quite a bit of parenting advice to share.

The 36-year-old, who is dad to Prince George, 5, Princess Charlotte, 3, and 9-month-old Prince Louis, attended a session titled “Future Dads” Thursday at London’s Abbey Centre.

The Duke of Cambridge could be seen helping one man change a diaper in a video posted by Kensington Palace, explaining how the hardest bit about clothing them was “the buttons.”

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William also spoke about “how daunting” being a dad is at first because the babies are so tiny.

The royal’s words of advice come as his brother Prince Harry and his wife Meghan Markle prepare to welcome their first child at the end of April/start of May.

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William shares: “They are so fragile, tiny little fingers and toes. You do feel like if you move them around too much, they are going to break, but they don’t. Wait until they’re nine months, and they’ll be off.”

“Once the lack of sleep starts setting in, the stress levels go up. From a young age you’re taught to have a vision, have a plan, have a career and all of a sudden babies come along and you have to start thinking about a lot more.”

“I think ladies are a lot more giving, a lot more generous, but guys – to make a success of whatever we’re going to do, we get into a rhythm,” he shares. “It’s such a change, your whole life goes one way and suddenly you’re told to stop in your tracks.”

Before his visit, the Duke also spent time at the Pall Mall Barbers, which is part of the Lions Barber Collective. The collective is a group of barbers who have “come together to raise awareness for the prevention of suicide and provide training for Barbers, called BarbersTalk.”

Kirsty Wigglesworth/Pool via REUTERS
Kirsty Wigglesworth/Pool via REUTERS

The barbers are trained to look for signs of depression when they are with their clients and offer suggestions to where they could look for help.

Tom Chapman, founder and CEO of the Lions Barber Collective said Prince William is “passionate” about changing the conversation around mental health.

Kirsty Wigglesworth/Pool via REUTERS
Kirsty Wigglesworth/Pool via REUTERS

“He’s genuinely interested in everyone’s story and spent a lot of time talking to the guys,” he added. “He was talking about the relationships between fathers and sons in general and the importance of himself and us passing it on to the next generation.”