I’m facing the same as well, she passed her NB test but at 6months, she failed her test. This is just the first time. I asked for advises from my mummy friends, and actually all of them told me to monitor since we are the ones who face the baby daily. My girl turns when being called, gets startled when there’s a loud noise and will stir awake when I accidentally step on something that makes a small noise. I don’t think that’s a hearing loss? Also the fact that 6 months old babies are very distracted with their surroundings. Many of the mummies also said their child failed the test and end up growing totally fine. For peace of mind I guess the tests can be done.
All e best
Charlene