One thing I’m finding helpful: directing my focus on making my speech easier, and more frictionless, rather than directly addressing my stutter.  I find this helps me isolate which parts are actually my stutter and which parts are my brain trying really really hard not to stutter, and thus creating a whole bunch of tension and weird add ons. If you think about it, would you mind your stutter that much if it was just repeating some sounds on some words, with none of the other stuff? Fluent people do that too. Something to consider.