Suggest Treatment For Stuttering

My kid is 4 years and 2 months old now. She is having very good fluency in both Telugu (mother tongue) nad Tamil as well. She recites lot of slokams etc., right form a very young age and even now. But, recently we recognized that she is devloping a kind of stutter/Stammer -- not sure how to name it -- to tell Mummy. she would say Mu..mu.. mu.. mummy.. at times.. but not every time. I'm really concerned whehter I should approach a speech therapist or somebody. I enquired with my regular paediatrician, whom we have been visiting right from her 4th month. She said its quit okay and u keep her engaged in reciting lot of slokams, vedas, etc., it'd be fine. please suggest me. Thanks for all your help!!