Thanks for the positive stories. We are really hoping his speech improves.
We got a referral for an audiologist from our GP. The hearing test was done in a soundproof room. They tested his ear drums with this machine and also did a puppet show with noises. We had to go back twice as the first time they put head phones in his ears and he wouldn't stop crying (he needed to be silent). The GP then received the results and gave a referral for a ENT. If you think your LO has a hearing/speech problem get it checked out.