LO is a monster to get to sleep at night and I don't know what I'm doing wrong. She's sleepy when we put her down in the cot, we feed her and change her upstairs in the darker bedroom, then pop her dummy in, and go back downstairs. This worked fine until about 4 weeks ago, now as soon as we leave the room, she spits the dummy out and cries, we go back up, but she won't take the dummy. She won't sleep and takes over an hour to go to sleep with us going up and downstairs, cuddling, rocking, feeding her again (she's not hungry), changing her again (she's not wet). We don't bath her before bed as she cries because she's so tired, so we bath her in the morning, twice a week. Does anyone have any idea what's going off? Have we messed up somewhere along the way?