I would say I was relatively flexible with her, because I was desperate to find what was best for her but still kept it pretty scheduled (for example: experimenting with changing wake times or
bedtimes, tweaking the
bedtime routine, adding / removing dream feeds and cluster feeds, etc.) She started sleeping longer stretches pretty
early and at 3 months I could
count on getting a 6 - 7 hour stretch, but every once in a while she'd go 8 - 10 hours without a feeding.
This is because all of the stolen moments that hubby and I
count on to get us through the day (nap time, computer time while boys are at school and baby plays quietly in baby - proofed area,
early bedtime for kids, hot bath and wine after kids go to bed) never happen because there is a flurry of fun activities that keep us from sticking to our schedule.