Ds is 2.2 and his speech has developed a lot the last 2 or 3 months. He uses sentences and usually could be understood by a stranger. In the last 2 weeks or so he has been really struggling to get words out - he'll say mu mu mu 10 or 15 times before he manages mummy, for example. It's generally easy words he has trouble with.
Is this just a phase of language development? Does anyone have any experience? And how should I handle it - I'm assuming just wait for him to finish, should I say something reassuring?
Any advice much appreciated.