I use a technique called "smooth speech." It's usually used for a repetitive stutter (which is what I have) and it sometimes works depending on the situation I'm in. All you do is prolong your stutter to prevent it from repeating. For example, If you're stuttering on "flower", f-f-fffflower. It does take a lot of practice and doesn't work all the time for me(but that's just me) but maybe it will for you! Hope this helps :)