Do any of you use a sippy-cup for your baby's bedtime feed? I'm planning to stop breastfeeding next month, my DD will be 8 months old, and was thinking of missing out bottles & going straight to a sippy-cup for all feeds. She uses one now for water at mealtimes & is pretty good with it, just needs help holding it. But I was wondering if the lack of sucking won't make her sleepy like a bottle or breastfeed would?