Talk to Ent Specialist on Throat/Tongue/ ENT

A.o.a. hope you are fine. dr. I have a 6 year old son. he is in class 1. from last 2 years he have a holding problem during speaking, means before 2 years he was speaks fluantly, he was speaks each and every word very clearly even he was reads poems or books etc clearly. but suddenly he stretch the words and clerify his sentence by taking too much long and take a time to ends his message to others. when he starts speaking, his throat will swell and he perform his word with full power. like BBBBBBBABA (BABA), SSSSSUPER MMMMMAN (SUPER MAN). I was consult with ENT specialist, he just prescribed VIDYLIN syp BD. but condition is as it is. kindly facilitate..