We have been using the "Trixie Tracker" for Claire's sleeping.
This is the chart for the last couple of weeks.
Blue lines means she is sleeping, yellow is awake.
As you can see, she's not too bad at night...by 6:30pm we have both girls down to sleep.
For a three month old, one wake up per night is pretty good we think.
The black&white chart at the top is the % chance she will be asleep at a given hour. Black means 100%, white means 0% chance of sleep.
.....Claire Tracker on the Trixie Tracker