I read posts of some of you with great weight gain and growth and I cannot help but compare. I just cannot seem to get C to gain weight. What are you doing? I feed on demand but never go more than 3 hours without feeding. Nights are 4-5 hours with a feeding. She just doesn't seem to take more than 2-3 ounces each time. I'm getting really frustrated. If I feel like I am empty I offer formula so I have no problem supplementing. Any tricks to getting her to eat more?