Jenna Bush Hager‘s household just got a lot busier — but she’s soaking it all in.

In this week’s issue of PEOPLE, the former first daughter opens up about the changes that have come about in her routine both at home and in herTodayshow gig since she and husbandHenry Hagerwelcomed their third child on Aug. 2: sonHenry “Hal” Harold.

“Whenever anybody walks in, we go, ‘Welcome to the nut house.’ Who says that? I do,” jokes Bush Hager, 37.

Hal’s arrival rounded out her family unit alongside two excited big sisters —Poppy Louise, 4, andMargaret “Mila” Laura, 6½, who “share a room” at the moment.

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

Jenna Bush Hager and her kids.Brian Doben

Jenna Hager Bush and children

“I’ll read with Mila a little bit, and then I’ll read a book to [Poppy] and everybody goes to bed. But they’re not asleep. Theycome out a thousand times,” she adds.

Mila actually recently learned how to read, which is something her mom couldn’t be prouder of. Explains Bush Hager, it “was one of the most magnificently beautiful times in my life.”

Hoda Kotb and Jenna Bush Hager.

NBC today

“It’s just such a simple thing, but it’s something I love so much,” she says. “You hear these clichés in parenting and they’re all true. ‘Time goes so fast.’ ‘The days are long, but the years are short.’ All of that is a cliché because it’s real, but nobody tells youabout these little moments in parentingthat will mean the most to you.”

“And I think watching my daughter learn to love something that I’ve loved since I was a little girl has been an unbelievable part of parenting,” Bush Hager continues.

Jenna Bush Hager/Instagram

Jenna Bush Hager

RELATED VIDEO: Jenna Bush Hager Welcomes Son with Husband Henry Hager: “We Are Overcome with Joy”

The mother of three certainly has a full plate between parenting her kids, her fourth-hour co-hosting gig atTodayalongsideHoda Kotb(she returned to the NBC daytime show on Nov. 11) and her current book tour with twin sisterBarbara Pierce Bush, which concludes on Nov. 24.

“What was really a joy of maternity leave was that I got to take my girls to school every single morning,” Bush Hager recalls, admitting she “definitely [has] missed a lot” in her girls’ schedules — “but at the same time, I try to focus onwhat I can do and what I do bringbecause I think if we beat ourselves up for everything we miss, then we’re not as happy of a parent as we can be.”

“Since Henry and I both have big jobs, I’m hoping that our kids realize the biggest job and the biggest priority is them,” she adds.

For more from Jenna Bush Hager, pick up the latest issue ofPEOPLE, on newsstands Friday.

source: people.com