My DD is 4 months, was ebf from birth and in anticipation of going back to work when she is 6 months, I have decided to introduce formula. I want to make the transition slow as I have had problems with engorgement and oversupply, but its difficult to know how to do it. Luckily she takes a bottle no problem (in fact it is so much easier than breastfeeding her when she fusses and his constantly distracted but that's a different story!) and so I've tried her with a bottle of formula for the last feed of the night since last Friday. She has taken 3-4oz and then would not have any more and she was sleepy. But then she woke up an hour later and seemed hungry so I gave the breast. Probably this was the wrong thing to do when I'm trying to reduce my supply, but well, that's what I did. Last night she took 4oz, slept at 7pm, woke up an hour later and I gave her more formula (I think she took about 2oz) but then had a disrupted night up at midnight, 2am and 4am when each time I breastfed her. I know she can go through the night with just one feed and had slept for 7, 8 even 10 hours on occasion. So really I'm looking for advice about how to stop breastfeeding gradually and how much formula she should be taking. Although she's 4 months she's only little weighing about 12lb. My next step was going to be replace the each daytime feed one by one over several days.