sleeping with pacifier

my lo is 2mth n she can only fall asleep sucking her pacifer (90% of the time) and when she is asleep she gets irritated or even wakes up when i remove her pacifier. if she in deep sleep and pacifer ownself drop out she will fidgit a lot and cry. any babies similar? shld I just let lo continue sleeping w pacifier?? worried she hungry but will just suck pacifier