it's a multi-factorial problem as you may know but remember there is no magic cure and part of the solution is going outside your comfort zone, so that would start with small interventions during meetings or just backing up what someone else said. Embrace your stuttering and trust me other people don't care. Also frustration leads to more stuttering and its a never ending cycle, I recommend you read "redefining stuttering"to give you more insight on how multi-factorial stuttering is :)