Wirelessly posted
He might just be a late talker. My nephew is a little older than that and he's hearing, but he doesn't talk well. He says maybe four words clearly. I know of plenty of hearing boys who talked late too.
My loss as a child used to be moderate-severe, and I was able to hear speech with my HAs. I didn't even have Phonaks, I had some Oticon BTEs. I don't know what his audiogram looks like though.