breastfeeding babies question

Hannah • This is my first child and my husband, Mishon and I are so excited!
Can you overfeed a breastfed baby? Here lately my 4 month old doesn't want to take a pacifier, all she wants is me.
Lately we have been fighting acid reflux and horribly vomiting and since we have gotten on top of the vomiting and reflux all she wants to do is be attached to me. My biggest fear is over feeding her.