I’m in a somewhat similar situation as you and what works for me is to live healthy. I know this sounds boring, but when I abstain from alcohol, pornography, drugs and so on, it really helps. Also it’s really important to get enough sleep. This doesn’t make it go away completely, but it helps. Best regards P.S remember that almost nobody cares that you stutter and the fluency of your speech isn’t nearly as important as the content of your speech. Try to act like you don’t care when stuttering and seem self-confident, then you’ll just appear even stronger than “normal speakers”.