Well, that's it really. DS, 25 months, started talking early and has a good vocabulary. Just in the last two weeks he's started stuttering on the first syllables of some words. It's not all words and it's not consistent, so a word that he's just got stuck on doesn't cause a problem in the next sentence. It's worse if he's tired or wound up.
My gut instinct is that his brain is working faster than his mouth, so he gets stuck, and that this is a passing phase so there's no need to try and correct him, for example. Anyone else have any advice, or experience of this?