His diction is very sharp for his age, I think largely thanks to breastfeeding.
The "CH" at the end of words like "lunch" and "bench" are very enunciated, his little lips curled cutely around the words. But there are still some words that escape his abilities :
Bus stop (bath tub)
And he still has a lot of made up words that I don't know the source of, like "boo-kay" for lamp post.