We have always had a good and fairly rigid bedtime in place, which personally I think is a must.
My DD is 18 months old and has a bottle at 6:30/6:45 and bed about 7.
But for the past 2/3 weeks she has been WIDE awake at bedtime!
I would have thought 18 months is so'll young enough to be going to bed at 7 but am now starting to wonder???