Try this. I promise you that this will work. Speak like a king or queen. Speak no more than 4 or 5 words at a time and come to complete stop. Even if it is not at the end of sentence. If you listened to President Obama he was a beautiful speaker because that is how he spoke. You can do that also. Keep yourself calm. Close your eyes and repeat," When I speak, calm flows through my body." If you want to know some more techniques join r/StopStuttering. You can also direct message me.