Jessica Simpson opened up this week about being a mother to three children ages 7 and under.

“Three kids is no joke,” she told People. “It is definitely constant, and the biggest challenge for me is trying to be present when I am pulled in so many directions.”

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Simpson added: “They are all in such different phases now.”

Simpson and her husband, former NFL player Eric Johnson, 39, share three children together: daughter Maxwell, 7; son Ace, 6; and their newest addition, 3-month-old Birdie Mae, who the couple welcomed in May.

As for her youngest, Simpson said the baby girl is “so precious” — especially when she shows off her dimples.

“Birdie is so precious. She is a little smiley angel these days. It is the best thing in the world to see and feel her smile. It fills the room,” she told the magazine.

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Though taking care of three children can be hectic — “there is a lot of dividing and conquering going on right now at our house,” Simpson said — the “Irresistible” singer ensures she and Johnson have time to “connect.”

“We typically download a movie and order dinner or do something super low-key to just connect. Eric is the greatest motivator and connecting with him on morning walks is the most grounding part of my day,” she added.