Hilary Duff Says 7-Month Old Daughter Townes Is Her ‘Chillest’ Baby — and Reveals How She’s Become a Calmer Mom (Exclusive)

The idea of having four children would stress many people out, but not Hilary Duff.

Since welcoming her fourth child, daughter Townes, in May, the 37-year-old singer and actress has noticed she’s the “chillest” of all her babies. Duff, however, has also become calmer in her parenting approach as her family has grown.

“She’s a really good baby. She just started sleeping through the night, which is incredible. She just is the chillest one,” Duff tells PEOPLE. “I don’t know if it took me having four kids to get a chill one, or if I’m more chill. I can’t figure out which one it is, but she just goes along for the ride.”

The “With Love” musician shares Townes, plus daughters Banks, 6, and Mae, 3, with husband Matthew Koma, while she’s also mom to son Luca, 12. “Our house is so chaotic, but [Townes] doesn’t feed off of that chaos. She just sits there and watches it all go by,” she says.

Lately, Duff has found herself trusting her gut in situations where she’d once worry. She recently took Townes to a chef friend’s house, where the baby put “a big glob” of gourmet quiche in her mouth — and started “choking a little.”

“Normally, I’d be panicked,” recalls the How I Met Your Father star, “and now I’m waiting, waiting, ‘Oh good, you worked it out.’ You know what I mean? There’s just a coolness to me, finally, on the fourth kid that makes life a lot more tolerable right now.”

Another thing making life easier for Duff at the moment — especially in the midst of the holiday season — is Meta AI, which she’s recently become “obsessed” with after initially feeling “scared of it.” She’s currently partnering with Meta to promote the service, available for free on Instagram, WhatsApp, Facebook, Messenger and Ray-Ban Meta glasses.

“I’ve used it for coming up with all of my gifting lists for the holidays, plus ideas. So obviously, I’m shopping for a toddler, a 3-year-old, a 6-year-old, a 12-year-old and then multiple other ages of people,” she explains. “I had to bring an appetizer somewhere the other day, and I was like, ‘Give me three, off-the-beaten-path appetizers, so I can wow people.'”

Meta AI works for many uses, and Duff’s gotten especially clever with utilizing the product as a mom.

“I was walking into a middle school meeting [for Luca], and I never went to middle school,” says the former child star. “Obviously, I have a 12-year-old who I’m in tune with, and in touch with, and I know him. But I’m like, ‘Okay, Meta AI, tell me five really great questions to ask a middle school counselor.’ And it was just like bang, bang, bang, bang.”

“All of a sudden, I was prepared for the meeting, so that was pretty sick,” adds Duff.

Follow @Meta.AI on Instagram and @MetaAI on Facebook to learn more.