Child stuttering

Hi,This is from a dad. I need suggestions as i am very upset at the moment. My child has suddenly started stuttering,he is 4 yrs old.He used to be very confident while speaking though he started speaking a little late. I am an Indian living in US. One of the reasons i think could be that he is going to full time day care and there are not many kids of Indian origin in his day care neither are there many families from our country where we live presently,so may be he is feeling excluded since other kids prefer to make friends with their ethnicity folks.Thats just my wild guess i am not sure if that is even the reason.Please advise what should i do to help him ? via /r/Parenting http://ift.tt/2q3jNkD