I do like theories backed up by scientific research! Apart from anything else I do like reading about what is actually happening and why and how the body just does what it's going to do and there's not really much you can do about it.
DD only sleeps 45 minutes too. She's occasionally gone longer but I've learnt the hard way not to get too excited by this.
RaisingMrC - I've got a copy, thank you. I had a quick read through about half of it last night. Then, I decided I would see what would happen if I put DD in her cot instead of feeding or rocking her to sleep. She cried for five minutes. It was a pretty full on cry but no worse when she's in the car and I can't get to her immediately. Interestingly though, she didn't seem to be crying because she wanted me to pick her up but because she was tired and wanted to go to sleep. I was patting her and singing to her but not really making eye contact. Then, for the first time since she's been born, she fell asleep, in her cot.
I was convinced this was a fluke but she did it again when she woke at 11.30. At 3am, literally the worst time in the world, she woke for another feed and was awake when I put her in the cot. This is normally the point in the night where I'm feeding her for hours trying to get her back to sleep or end up on the floor of her room or in the bed co-sleeping having kicked DH onto the sofa. She cried for about five minutes and obviously wanted me to hold her, so I did. When she was calm I put her back in and she kicked off again but wasn't indicating she wanted me to pick her up. She cried for about five minutes then gradually fell asleep. I was back in my bed by 4am, which is earlier than if I'd been holding her. She woke up crying again, by the time I got to her door she was asleep.
This morning for her nap I fed her and she got drowsy, put her in the cot, she cried then opened her eyes, saw me, closed them and went to sleep. It took five minutes.
I don't want to get my hopes up but I really hope she's learning to self settle. I'm absolutely against CC but there does seem to be a difference in her crying because she is tired and crying because she needs me. I'm about 30cm away from her and touching her and talking to her so I don't really feel as if it is CC.
The Sleep Sense program says go cold turkey on the feeding but I think that would be too traumatic. I think I'm going to try and see if I can get her to settle in the cot first, feeding her as I normally do. Once, if, we crack that, I'll look into having a little gap between feeding and sleep, or gradually reducing the length of the feeds.