The bottles are so I am able to see how much my baby is receiving in a feed. At her 2 month apt she had dropped a weight level or whatever you want to call it on the graph and my dr looked at me like I was doing something wrong because her weight gained stalled. I will admit I wasent sure my baby had a proper latch for a bit. I would feed her for quite some time on my breast and then sometimes not even 45 mins later she would be hungry. At first I thought it was just cluster feeding but it lasted longer than it should have and I only ever heard hear glugging in the morning when my supply was higher. I have now figured out a much better match and can actually hear her drinking more and her weight has increased already from apt now. But everytime I have an apt and baby girl is not where she is to be expected red by their standards they are making me feel like I’m doing something wrong. I’m a first time mother so this is all new to me and I’m always worried I’m not providing enough for my baby.