I had one growing up, my dad too, and DD has developed one.
I know that for me, it is down to my brain working faster than my mouth and everything getting jumbled. I have to pause and take a breath, and then it flows again.
DD is only 3 and doesn't really grasp the pausing and taking a breath yet.
It seems to be on the end of the word, before the next one
"I want to eatttttttttttttttttttttt apple"
The letter varies, but mainly "t" and "s".
I am trying to be patient, not finish her sentences etc (and not laugh, which is proving the most difficult because the look of concentration on her face is soooo sweet
).
Is there anything else I should be doing, or just let it work itself out?