My FF DD has never been a great feeder, but used to feed every 2 to 3 hours and slept through, having 5 to 6 feeds during the day. Now she only wants 3 or 4 and really only feeds well when it is a feed before a nap/sleep, when she gets relaxed and dozy. She just is not interested at other times and during the day is going 4 -5 hours with out a feed. Is this normal?