My DD is 4 next month, & is very loud at times. Her kindy teacher suggested getting her hearing tested, so we have her booked at the Lions Hearing Inst 2 days after her birthday. For my own peace of mind, ive also sent off a referral to our local child development centre to have her assessed. My DD is very clever, but loud, boisterous & incredibly headstrong/bordering on defiant. These characteristics, whilst completely normal, have impacted her social experiences, and all I want is for her to be happy and have friends.
No advice from me, but im in the same boat so lets paddle together.