I have a 6 month old baby girl also. She weighs 20 pounds and is 26 1/2 inches long. My doctor says she is perfectly fine and she should be getting 24 ounces of milk per day along with 2 servings of fruit and 2 servings of vegetables (her serving size is usually around 3 teaspoons). He doesn't think she should have any meats until she is a minimum of 8 months old, but he prefers to wait a year. I hope this helps! Of course you want to follow your pediatrician's advice as well. Every child is different!