Any of you mamas started on cows milk before the 1 year mark? I love the bond I have with my son from breastfeeding but he refuses to take the left side and no matter what I including trying to pump I'm like a full cup size difference between the two sides, also he's had teeth for 2 1/2 months and never had an issue until now but he has been biting me and now I have sores on my nipple.