How long does it take to stop breastmilk production?

I’ve taken medication to stop my breastmilk production 1 week ago. Though my breasts are not badly engorged anymore they are still filling up slowly and I get lumpy swollen breasts after 4 days which then needs to be hand expressed or pumped for short 2-3mins to alleviate the discomfort. I’ve also taken sage and ordered tea to stop milk production. How long does it take for my production to dry completely??!