DD and I have been through our challenges...mastitis, cracked nipple, oversupply. I am constantly worried about a possible bad latch. My nipples are just kind of sore when she nurses, not really painful. She comes on and off a lot; I feel like we do a lot of re-latching. At this age, is it impossible to try to change how DD latches? I have watched lots of videos, etc, and I feel that she still doesn't latch on very deeply. I have had wicked oversupply, which is finally tapering off and I feel like she fights the flow. Any suggestions for latch?