you can also reduce the of feeding (pumping) gradually. For example, 4 times a day => 3 times a day ( a week / 2 weeks) => 2 times a day ( a week / 2 weeks) => 1 time a day => 1 time after a few days.
But think carefully and seriously before your decision. Once you try to quit breastfeed, it is very difficult to re-feed.
In fact, when you and your bb get used to bf, you both enjoy the time. A lot of mamas here (including me) think a lot of method to increase the milk production. If you have good production. Don't quit lar. Add oil.