My six-month old has not been on a schedule and I think I need to put her on one. She is inconsistent in her feedings, wanting 6-8 oz. But if she falls asleep, she seems to want another bottle within two hours. I read a six-month old should be eating every 4 hours. Help! If she won't stop crying and rocking or holding her won't calm her down, then I have to feed her again. I've offered her 8oz. of formula and she often wastes it. Thank you.