“I’m going to get their bags packed the night before. I’m going to get all of their essentials for school and the next size up, so when they size out of that they’re ready to go,” Vanessa, 38, explains to PEOPLE.

“I’m going to have their lunches packed the night before, we’re going to have gas in the car, we’re going to be ready,” she enthuses.

Mother toPhoenix Robert, 2½,Brooklyn Elisabeth, 4½, andCamden John, 7 next month, Vanessa is partnering withKohl’sto make the planning easier for this importantback-to-school season. She and musician husbandNick Lacheywill send Phoenix to preschool part-time for the first year.

But Phoenix will have some help: big sister Brooklyn, who’ll be attending the same preschool full-time. Says Vanessa of her only daughter, “She’s the cutest littlecaregiver-helper-lover-personin the world.”

Vanessa Lachey shopping at Kohl’s.Dave Kotinsky/Getty Images for Kohls

Vanessa Lachey

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Meanwhile, the couple’s oldest child will start first gradeat his K-6 elementary school, but he’s equally excited about spending time outside the classroom.

“Camden is my little sports guy,” Vanessa shares with PEOPLE. “You name it, he does it. He wants to try everything. He’s so active. He does not stop.”

nick-lachey-vanessa-kids-vacation-disneyland

Last Friday — with Nick, 45, on tour — Vanessa was running late to get Camden and Brooklyn to their summer camps in the morning. She decided it wasn’t worth rushing her kids; instead, she’d take Camden to camp late and let Brooklyn spend the day at home.

When she arrived at Camden’s camp a half hour late, she saw they’d barely started. Then, she spent the day at home with Brooklyn making muffins for when Nick came home Sunday. “I said to myself, ‘It’s not the end of the world, it’s going to be okay,’ and it was,” Vanessa says.

Andwith a busy school year ahead, it’s a lesson she wants to keep in mind: “You’ve just got to know that things aren’t going to always go according to plan, and you’ll be okay.”

source: people.com