My baby is on formula and currently 3 weeks old. It has been recommended that at each feed (every 3 hours), she is to be given 4 ounces. Seems she drinks the milk rather quickly and after the bottle is empty, she is still asking for more. I do not give her anymore than the recommended amount, but have read recently that each baby is different so wondering is it ok to increase the milk quantity at each feeding now or just feed more frequently.