Ds 2 has recently started stammering. It's only at the start of sentences, and once he gets going it all comes out fine. It's not individual sounds, but just the first word. So it's not " I b-b-b-b-b-brought my bag" but we do get " But but but but but I did tell you"
Is this an actual stammer or is he just stalling in order to think what he wants to say? Is it normal to suddenly start doing this with no previous history?