Our 10 month old has started waking every night at random times.
She's slept through the night since she was 5 months old (apart from the odd windy night... she is quite a windy baby).
We dropped the 11pm feed a few weeks ago, but I would have expected her to have got used to that sooner, as we dropped it very gradually.
Could it be a sleep regression? And if so, what is this whole sleep regression thing? What's it caused by, how long does it last?