Yep bro slow down your thoughts and speech both and speak in exhale and do this for around 6 to 8 months after that you will be able to speak on your natural pace with around 85 to 90 percent fleunt, be calm always, I don't need to do any exercises now I am about 95 to 100 percent fluents even under pressure and I am sure that after a year I will be fully fluent and if you have still problem under some words strech the first word of that sound and you will be able to articulate and pronounce fluently and exaggerate when you speak