D.W.
The best advice our pediatrician gave us with our first child was to let them guide you on what they need vs. what you believe they need (unless the pediatrician is concerned and has expressed that to you). He advised us against schedules for our convenience and in favor of letting the child develop their own. It was some of the best advice he's given us.
Babies don't know how to overeat - it's completely a learned behavior.
Our son never (even at a year) ate more than 5 oz/feeding. Our daughter never got past 8 oz/feeding, but she definitely ate much more than her older brother ever did - though he was much more frequent.
Here's what the American Academy of Pediatrics recommends on their parenting website:
http://www.healthychildren.org/English/ages-stages/baby/f...