Sources told Us Weekly the 37-year-old reality star and 33-year-old club promoter are seeing "what happens" as they co-habitate with their three children over the holidays.
"Scott has been staying at Kourtney's house with her and the kids for the last few weeks," an insider said. "He has really cleaned up his act and been well-behaved. Kourtney is always skeptical about how long it will last, but she has been very encouraged to see how much he has been trying."
"They are planning to do everything together over the holidays with the kids and will see what happens," the source added. "For now, they are taking little steps in the right direction."
An insider told People Kardashian and Disick are "getting along great" and that the reality star "seems very happy" with her ex-partner. The pair sparked reconciliation rumors over the weekend when they were spotted vacationing in Cabo San Lucas, Mexico.
"Scott set it all up and [it] was a way to try and make things work again with Kourtney," a source told the magazine at the time. "He surprised her and whisked her away on this trip."
Kardashian and Disick, who share 6-year-old son Mason, 4-year-old daughter Penelope and 21-month-old son Reign, split in July 2015 after nine years of dating. The reality star previously said on Keeping Up with the Kardashians that a reconciliation would require a lot of effort.
"Right now I can't even wrap my head around that idea," she admitted on the E! series. "There's so much work that would be involved and I'm so not even there yet."