Though Meghan Markle's deranged half-sister has plans to overshadow the Royal Birth, Meghan is just focused on preparing for her baby.

Towards that end, she and Harry are enduring a sea of chaos as their new home is made ready.

And Meghan and Kate have put aside their differences as William and Kate lend them some royal parenting advice.

Us Weekly reports that Meghan and Harry are taking advice from a pair of very experience parents -- William and Kate.

Harry and Meghan have been the uncle and aunt to three children. Now they'll be parents to one of their own.

"Both of them have spoken to Harry and Meghan about parenting," the royal insider reveals.

The pair have reportedly been "giving a few bits of advice" to the expecting couple.

They're trying to convey as much as they can "ahead of the arrival of their baby," the source describes.

Prince William and the Duchess of Cambridge share three children.

They have Prince George, 5, Princess Charlotte, 3, and Prince Louis, who is only 9 months old.

"Having been through it a few times," the insider characterizes. "Their ‘tricks of the trade’ have definitely been appreciated.”

Everyone knows the basics -- a baby is born and mostly just cries, sleeps, and feeds for a while while you get no sleep.

Over time, things get easier, and new challenges emerge.

According to the source, “Harry and Meghan are totally open to all help and advice!"

Meghan is, of course, due in late April.

This baby won't be a direct heir to the throne, but baby Sussex will still be royal -- and receive royal accomodations.

According to Us Weekly's insider, there is a "race against time" to get Meghan and Harry's new residence ready in time.

"It sounds chaotic," the source admits. "But they're calm."

"They're happy to go with the flow," the insider characterizes.

Speaking of maintaining a generally chill vibe in the face of chaos, Meghan is keeping that attitude when it comes to giving birth.

Childbirth is agonizing, traumatic, and can dangerous.

However, Meghan is said to have been working closely with a doula in order to be fully prepared.

Meghan is focused upon having "calm and positive energy around the birth."

That might sound a little New Agey, but terminology aside, any medical doctor would approve of someone emotionally preparing to give birth.

Meghan is reportedly scheduled to give birth in a hospital that is closer to Windsor.

That is affirmatively Meghan's choice.

The Duchess of Sussex is said to have a lot of control in her married relationship.

But insiders stress that this is not a bad thing, and that it is not insulting to acknowledge.

"She can definitely call many of the shots," the source tells Us.

"And," the insider adds. "Not just when she's pregnant."

Previously, an inside source did admit that there has been some degree of largely unspoken friction between Meghan and Kate.

"There will always be some competition between them,” the source acknowledged.

When you're constantly compared and contrasted in the media, it's bound to happen.

“But," the insider clarified. "They’re definitely getting on better now."

Now they can bond about being mothers.

It's wonderful that William and Kate can share their parenting experience -- and their reflections upon being royal parents.

And it's very nice to hear that Meghan and Harry are so receptive to their advice.