My baby is 3 months old. She eats 4 oz . Seems like every time she wakes up from a nap she needs a bottle. Even if its an hour nap. And she stays up with me for about 45mins to an hour . And shes been spitting up more recently like shes eating too much bc she sitts up for along time . I dont know if i should stop trying to feed her right away or what but seems like thats what she wanted. I hear their suppose to eat evert3-4 hours . Shes formula fed