Reality TV star Scott Disick may have been working hard to get his act together to get his family back but ex-girlfriend Kourtney Kardashian still fears he could fall off the wagon. This is why she might join him when he heads out to Las Vegas for a New Year’s Eve appearance at 1OAK nightclub.

“It's open for discussion. There's a chance she'll go with him,” a source tells E! Online. Even if the pair have not reconciled as a couple, Kourtney is determined to help Scott stay on track so that he could be a good father figure for their three children, Mason, 5, Penelope, 3, and Reign, 11 months.

"Everyone—Kourtney included—would prefer he not do it. But it's something he has to do because he blew off so many appearances with them. He owes them. Kourtney understands it's part of the business side of things,” the source said. Scott has been making regular hosting gigs with 1OAK both in Las Vegas and in New York over the past couple of years. When he and Kourtney broke up back in July, he cancelled several appearances in various locations including 1OAK.

Club appearances have been a source of contention between the former couple, because of Scott’s excessive drinking. He entered rehab back in October, and the NYE party is the first club appearance that he’s announced since seeking treatment.

Kourtney has recently loosened her rules and has allowed Scott back into the family unit. Scott has been stepping up on daddy duties and it remains to be seen if he can stay on track. One member of the family, who is showing full support for him is Kris Jenner. She recently posted a selfie with him on Instagram,where she gushed about how much she loves that he’s the father of her grandchildren.

Watch “Keeping Up With the Kardashians” Season 11 every Sunday at 9:00 p.m. ET on E!.