Kelly Clarkson and her husband, Brandon Blackstock, recently discovered their 4-year-old son, Remy, is nine months behind his peers in his speech development due to a previous hearing impairment.

“He had a speech problem because he had this ear problem when he was a baby,” Clarkson, 38, told People. “We didn’t know.”

The “Unbreakable” singer said her son’s ears got “clogged up with a ton of wax,” which made them think he was deaf because he “spoke as if he was underwater.”

The concerned parents hired a speech therapist, who is still “working really hard” with Remy via Zoom during quarantine.

“The big milestone for us is Remy getting to really find out his own personality and his identity, because it’s been frustrating for him to not be able to really vocalize his emotion,” Clarkson said. “It’s a really important thing and it’s very frustrating for them and us because we can’t communicate all the time.”

The “Trolls” star added that Remy is now making full sentences and engaging fully, which she says is “really a blessing.”

Clarkson and Blackstock, 43, also share a 5-year-old daughter, River Rose, and two children from Blackstock’s previous relationship.