slowly decrease the breastfeeding time.
how i did it was last time baby feeds every 3 hours. then i switched to bottle feeding first so i was feeding EBM. then i dragged to pump every 4 hours... slowly when the amt decrease back to same as when i was pumping at 3 hours, then i drag again to pump every 5 hours. then slowly drag drag like that ... it will naturally get less and less
then there was once i stopped one week. but suddenly my breast still have milk so i expressed one more time. and after that, it stopped completely.