Usually when I stutter on my name , it’s because every bad memory of me stuttering just flashes back into my brain right before I say it. This makes me get shaky, nervous and anxious. So you need to remain and calm and just not think about it at all. If you can’t say your name on the spot, you could start with “hey my name is ......” rather then just stating your name, or you could say “ it is .........”