Sleep 100% affects fluency rate. Check out my very last comment on another post in this sub for some advice from a speech therapist and person who stutters. I understand the irony, but be weary of taking advice from reddit on something as personal as the way you talk. You’re at the age where one person saying something pessimistic or negative can really set you back on your developmental curve of self acceptance and growth. This sub is a place people come to vent, which makes it seem like the stuttering community is a negative space, when the reality is that we’ve just condensed all the people who need to express negativity