Nipple shield

My Nipples are very big for my baby mouth, for that reason she cannot take the aureola correctly and she just use my nipple to eat. That makes my nipple came out with a very rare shape. And of course she she start sucking hurts, the pain goes away a few min later. Some time I use the nipple cover but she still holding just the nipple and no the aureola. I don’t know if she is eating complete just with my breast. She just fall sleep a few min later she start feeding. I hear that she is sucking g but I’m not sure that she is swallong all the time. Because I’m not sure that she is eating week just with my breast I extract and I give her my milk in a bottle. Do you have tips for moms with big nipples like me? Any suggestion in how to sue the nipple cover? I’m also scare that if she use to much the bottle and the nipple shields then she don’t want my bubs with out that cover.