Peta Murgatroyd Shares Pic of Baby Shai With Shirtless Maksim Chmerkovskiy

Baby Shai is only four months old, but he's apparently "eating everything."

Peta Murgatroyd took to Instagram on Thursday to celebrate another month of life with her little one -- and a shirtless Maksim Chmerkovskiy.

RELATED: Peta Murgatroyd Shares New Pic of 12-Week-Old Baby Shai -- See the Cute Celebratory Snap!

"I'm 4 months now and I eat EVERYTHING ����," the Dancing With the Stars pro captioned a snap of her fiance holding up their son, who can't keep his "4 month" card out of his mouth.

I'm 4 months now and I eat EVERYTHING ����

A post shared by Peta Murgatroyd (@petamurgatroyd) on May 4, 2017 at 4:26pm PDT

WATCH: Maksim Chmerkovskiy Adorably Dances With Baby Shai in the Streets of L.A.

Chmerkovskiy, who was eliminated on DWTS with partner Heather Morris last week, definitely seems to be enjoying his newfound time around the house.

"When dad gets to pic the outfit ��������#daddytime #babyChmerkovskiy #FirstTimeByOurselves #HouseIsAlmostTheSame," he wrote alongside a photo of himself and Shai on Wednesday, after sharing another pic of the pair enjoying a little basketball.

When dad gets to pic the outfit �������� #daddytime #babyChmerkovskiy #FirstTimeByOurselves #HouseIsAlmostTheSame

A post shared by @maksimc on May 3, 2017 at 4:27pm PDT

When mommy says 'no TV' but it's the playoffs! I'm not trying to make my son like the same things I do. I'm just 'gently whispering' to him why Jordan is the #GOAT , @KobeBryant is second GOAT-est, @BrooklynNets is our team and @KingJames and @russwest44 are our favorite players right now ;) #babyChmerkovskiy #BasicEducation #WatermellonAndHoneyThough ����

A post shared by @maksimc on May 2, 2017 at 9:47pm PDT

EXCLUSIVE: Maksim Chmerkovskiy Returns to 'DWTS' After Elimination, Shows Nick Viall His 'Maks Ways'

Murgatoryd, meanwhile, is doing her best to balance motherhood with DWTS. See more in the video below.