Turning to sounds milestone

My daughter is 3 months old now and since before my two month appointment I was made aware that she should be turning to sounds and she still does not despite attempts on a daily basis, practicing with her and trying everything for her to do so. She only reacts to sudden movements not loud sounds either. She passed her hearing test at birth though. Does anyone have similar experiences or suggestions?

Update: We went to the pediatrician and she determined that she has decreased hearing so she referred me to the audiologist so we’ll be going there most likely next week to find out what the cause is. She doesn’t hear at all as far as Ik, but they can’t say she’s deaf because they don’t know for sure until she gets another hearing test done. Thank you all for your comments.