Disick, 30, who went to rehab in 2010 for his drinking habit, has allegedly increased his alcohol intake after his mother died in October, reported Radar Online.
"She was giving him time to grieve, but now he's drinking with a vengeance. She wants him back in rehab or going to AA meetings at the very least. They've got a wedding to plan for next year and she's not having it ruined by a drunken groom," a source said.
Earlier this month Scott was spotted swaying, staggering and looking bleary-eyed at Kanye West's Yeezus concert in Houston, Texas.