when I was home full time with Fred, we fed anytime, when she wanted it really so some days it was every 1.5 hrs or so, other days it was every 3-4 hours. Overnight was usually 4-5 hours, bu tI just fed when she wanted it. Normally she would fall asleep after a big feed, so she kind of had the play feed sleep routine. Now that I am back to work, she feed every 4 hours or so and just before sleeps. I just go with the flow most of the time though. Snacking never really bothered me.