Question: how many ounces should an 11 week old eat a day?
Answer: This amount increases to 2 to 3 ounces by 2 weeks of age. At about 2 months of age, babies usually take 4 to 5 ounces per feeding every 3 to 4 hours. At 4 months, babies usually take 4 to 6 ounces per feeding. At 6 months, babies may be taking up to 8 ounces every 4 to 5 hours.