DS has been mixed fed until now but for various reasons I need to transition to FF. I don't want to go into why. Should I go cold turkey or express a little bit and gradually express less and less? How long will this take to dry up the milk? How much should i express and how often? DS hasn't actually been on the breast since yesterday morning first thing. I expressed a feed at 10pm last night and then a tiny bit at 3am to relieve discomfort and now I've expressed a little more this morning as they were very sore.