Ok, I have a lot of questions but I'm so tired I don't know if I can formulate them coherently!
Our DD's sleep has gone downhill steadily from 4 months. Before that she slept through and self-settled from 2 months. She's 10 months now. She wakes at different times during the night, could start at 10pm one night, and 1.30am the next night. That was ok until she started not being able to go back to sleep. Sometimes she's upset about it, and other times she is just awake and wants to play! I stay in her room once I've got up to her and sleep on the lounge there so we don't disturb DP too much (he can't just turn up to work and get paid even if he can't think straight, our livelihood depends on him being compis mentis). So, I started putting her on the lounge next to me to sleep - this is very uncomfortable for me as my arse ends up hanging off the edge of the lounge and my legs cramp up! She sleeps ok, but I don't, ha ha.
I don't really want to make a habit of it, but for times when we're desperate for sleep, how do we co-sleep in the bed? Does she sleep in the middle between us? What about her slipping underneath the doona?

She is also getting harder to settle during the day when that was never really a problem. For example, she refused her afternoon sleep today when she seemed tired, and has now gone down really late because she was overtired. Now she probably won't go bed un til late in the evening and I'll be paying for it all night

Also, what do people find are the benefits of a sleeping bag? I bought a Grobag on sale but it just seems to swim on her. She can't sink into it but it just seems really long - I imagine her getting tangled up in it.

I can't think of what else to ask. I've read "sleeping Like a Baby" and like it mainly because I then felt I wasn't doing anything wrong by feeding her to sleep when she wakes up during the night (& that doesn't work anymore), but I'm getting a bit desperate as I'm battling yet another chest infection and trying to function on 3 or 4 hours broken sleep. I don't want to do CC as I'm not convinced of 'no harm'.

Any suggestions?

Sorry, this has been long and rambling, I hope you can make sense of it.