My dd is almost 5 weeks. We have started to get decent runs of sleep (3/4 hours between feeds) at night. However, she has recently developed a cold and now is waking around 3/4am ish. Shes not unhappy at all, in fact she is currently next to me on the sofa wriggling around making her happy cry! How do I help her understand that this is night time? I know she's little but I want to start trying. I'm not playing with her or stimulating her when we get up, I'm trying to keep the lights dim and not talk to her too much. Any ideas?