For LO1, OH was giving a bottle of EBM (the only bottle of the day) for the first, oh, five months. Then we went on a trip, only brought the crappy pump and DF turned into a BF. Also, I had decided I wasn't going back to work so there was no need for expressing and bottles. Funnily enough, he always woke for the bottle feed, which you might think would be the easier one. He had no trouble at all going back to sleep. Resettle was max a hand on his back for a minute. It was nice for OH to have a bit of cuddle and a wee smile. Then, with the BF version, he always stayed pretty soundly asleep. I mean, he would rouse up enough to get started and zone out completely, basically to being sound asleep by the time he was finished feeding. LO2 was a bottle free baby and same story, didn't need to wake much to get started on BF. They both kept up DF til about 10 mos. That 1 am ish feed was gone for both by about 6 weeks or so.