Honestly Meg, I know it is tough when you are sleep deprived....it used to make me feel like all my confidence has gone out the window, but after some disasters with waking Olivia when she evidently wanted to sleep, I realised I was always best to leave her to make her own little mind up.....especially at that tiny age.

Babies of Coco's age haev an "awake" window of around 1.5 hours, regardless of how much sleep they have had previously ie they will feel knackered after only 1.5 hours of being awake, so will need to sleep again soon enough anyway.

I found, eventually, with Olivia, that if I missed her tired signs, and she was awake for longer than 2 hours, that was when she she was totally over-tired and really really fought sleep: that was when we went through the OMG she hasn't slept for 8 hours type of days, which were tough....so I know how you feel.

My advice would be to let her sleep, and then when she wakes, feed her, have some interactive time for a while, and really watch out for her tired signs, and then pop her back to bed again. It'll likely be inconvenient for your evening/dinner etc, but that's just life with a baby I reckon.

(All babies tired signs seem to be a little varied...Olivia would get "glazed" and disinterested and her first yawn was optimum time for back to bed. Wheras Charlie goes all jerky and makes loud talking noises (not cries, but not laughter: more like frustrated yelps?!) Coco will no doubt have her own too....

Trust yourself and trust her.......HTH