Try not to worry too much right now, because it could all change in the next 6 plus months. However, I would personally go to a health visitor for a referral to some sort of speech and language group. If he’s just slightly delayed great the help will make it come quicker hopefully and if it’s a bit more then great he’s getting early intervention. Win win.
Mine doesn’t speak 😅 We’ve heard him say words but then he doesn’t do it again, but we know he can