Hi, does his tounge looks like heart shaped when stick out? If yes, most likely is toungue tie. There are two types, one is called toungue tie and the other one is called lip tie. For me, I bring my kid to polyclinic and get referral letter to be referred to NUH for a detailed check whether any surgical is needed to correct the tounge tie. The doctor commented that since my boy's speech is very clear and pronounce well, there is no need to have any intervention for now. Thus, we will wait till he grows older and make decision again.