Hi all. DD is 13 weeks, and until recently was reliable sleeping 10-6 overnight. However in the last week or so she has started going to sleep at 7pm and sleeping for several hours, waking up unpredictably at various points during the night. Sometimes she will go back to sleep no problem, but other times she is just not interested in sleeping - doesn't cry, just is obviously awake and making noise.
For instance, last night she woke up at 12.30, I fed her but she didn't go back to sleep. Tried putting her back in her basket to go back to sleep, but she was just babbling and kicking and totally awake, so I got her up and came into the living room (and went on MN!), and waited until she was a bit more tired and I could get her back to sleep - we eventually went to bed at 2.15 .
I do keep the lights low, don't play with her etc, and am not sure what else I can do to get her to go back to sleep quicker - any advice?