My stutter is pretty much only blocks, how can i start overcoming it

My stutter is pretty much only blocks, how can i start overcoming it I’ve never really stuttered in the sense of repeating a part of a word before. It’s either being stuck on the beginning part(like holding “shhhh” and not being able to get the rest of the word out) of a word or just fully blocking. Do you guys have any tips on how to fix this?