오빠 술 좀 줄여요: "Oppa cut down on your drinking"
(Oppa sul jom jul-ryo-yo)
좀: A little
줄여다: To reduce
 TOP Comment on @se7enofficial Translation by @BigBang_Likes on Twitter.
I think TOP is repeating what fans post on his IG when he posts pictures of wine 😏. I can imagine him doing that whiny, cute girl voice 😂.