Needing advice on sleeping issues with 8 week old. We've been having issues again with sleep, initially it was very hard to get her sleeping out of my arms which was exhausting. I thought we had cracked it as she had started settling much better in moses basket, crib and cot.
The past few nights have been horrible with her not settling at all. Last night was the worst so far and I spent about 3 hours crying.
She didn't sleep the whole day (bar a 30 min nap) as she was just constantly alert and despite trying to settle her for a sleep she just wouldn't. She fell asleep at 10pm and as soon as I put her in her cot she was wide awake.
I tried everything, changing nappy, feeding constantly, soothing, rocking, walking around, even gave up and tried a dummy which she kept spitting out. The only sleep I got was when she fell asleep on me twice, and I fell asleep accidentally due to exhaustion which isn't exactly safe.
I honestly don't know what to do and I feel so ill this morning and my partner hasn't slept either. I can't cope with this continuing in this way and really need some practical advice - please don't just say 'they grow out of it' cos some babies don't for years and that isn't a helpful statement 
Plus in the middle of the night when I'm just willing her to sleep, I find myself crying thinking if something awful happened to her and all I've done is wished she slept and complained about it, and then feel like a terrible mum