I would check what her definition of "all night" is. For me that means 12 hours but when I questioned some of my friends whose babies slept "all night" I found they meant from 12-5am or something - that is no where near "all night" imo!
My lo only ever really woke once at night-about 4am from birth really. To start with he went to bed at midnight with us (after cluster feeding for 5 hours straight
)and we gradually moved his bedtime back to about8/9ish. He continued to wake at 4am until he was about 21 months when he started reliably sleeping through (ie 11/12 hours).

My lo only ever really woke once at night-about 4am from birth really. To start with he went to bed at midnight with us (after cluster feeding for 5 hours straight
)and we gradually moved his bedtime back to about8/9ish. He continued to wake at 4am until he was about 21 months when he started reliably sleeping through (ie 11/12 hours).







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...he'd just wake up and snuggle, and then go back to sleep.


) And while co-sleeping children probably don't rouse to the point of needing to escalate to crying to get their needs met, or get up and play at odd times of night.... it's still not "sleeping through the night". I think either my friend's memory is a little hazy and she has some mild anxiety about having a new baby soon (that according to all her friends around her will night wake every 2-3 hours like all the rest of ours do) or she had perfect children!!


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Sometimes I would wake up with little hickies and sometimes he would actually find the nipple! 
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