Hearing loss in LO

What happens if LO fails 3 hearing test? My boy pass his right ear but fail on the left at nb hearing test. Went for a repeat test at 1 month,was told that his both ears failed. Currently he just turn 2 months. Went for another test,both ears needs to be referred. Was told to do another detailed test which requires LO to be mildly sedated(oral sedatives) Any mummies facing the same issues? Im so worried.