Scott Disick and Sofia Richie’s relationship has cooled off a bit in recent weeks, a source tells Us Weekly exclusively.“Scott and Sofia have simmered down a little and Scott has been making a big effort to refocus on himself and his family,” the source explains. “Their relationship has taken a bit of a backseat and it’s not either of their main priorities right now.”Us confirmed in July that Disick, 37, and Richie, 21, reunited after two months apart.