Scott Disick has seen his children with ex Kourtney Kardashian several times since entering rehab last month
Credit: Courtesy Scott Disick

Scott Disick may be in rehab, but his thoughts are with his children.

Disick shared a photo with his oldest child, Mason, 5, on Instagram on Tuesday. It’s not clear if the cute photo is new or has just been reposted.

In the image, the 32-year-old and his son with ex Kourtney Kardashian sit on a private plane. Clad in all black, Mason has his sweatshirt hood pulled tight over his head.

“Boys trip #killingit,” Disick wrote. It’s unclear if the father of three is still being treated at luxury drug and alcohol rehabilitation center Cliffside Malibu, where he checked in last month.

Disick has been spotted out and about several times during his stay, but a source previously told PEOPLE he’s committed to his sobriety.

“He wants to make it stick this time because he has come close to losing everything,” the source said.

Just last week,Disick shared an older photo of himself boarding a private plane, sparking speculation he’d left rehab.

A few days later, he was spotted actually out in about in Malibu, stopping at a car dealership in the San Fernando Valley.

Kardashian has brought Mason, as well as daughter Penelope, 3, to spend time with Disick at the facility.

The longtime couple split over the summer, and a source initially told PEOPLE that Kardashian planned to seek sole custody of their children because “she thinks he is a drunk mess.”

Things seem to be on the mend, however, with another source telling PEOPLE that Kardashian is impressed with Disick’s progress.

“Kourtney is very pleased that Scott is doing so well. She is happy that he is finally focused on his sobriety,” the source said. “She likes that he is really making an effort when it comes to the kids. She is starting to trust him more, but there are no talks of getting back together yet.”

Just last week, Disick even went to the reality star’s Calabasas home to see Mason, Penelope and Reign, 11 months.