I thought I would take a chance and see if someone else was experiencing similar issues and yay! (sorry to those who are going through this) there are. My little chickadee used to sleep from 7pm through till 2-3 am and then 7am. But a few days before we left on our holiday to stay with family for christmas she started waking every 2-3hours overnight and hasn't stopped since (going on 4 weeks now).
I thought maybe a growth spurt (which she has grown heaps but has gone on for ages) and now have found out she has her first 2 teeth coming through at 4 months!
I am not sure whether just to ride out this waking and keep feeding her or whether to start trying to resettle her though she usually feeds really well at each waking rather than just nibbling and falling asleep. She always goes back to bed/sleep easily and is happy enough during the day.
I just hope it all ends soon - any ideas??