Good question! From what you’ve described it sounds like you may have learned a technique called prolonged speech? At first it sounds very unnatural and at times monotone, but the goal is to get the technique to a point where there’s a balance between the level of naturalness in how the technique sounds and the level of control it gives you with your stutter. You first start off learning the technique in short sentences, then paragraphs and then perhaps working towards generalising it in everyday conversation. This technique is sometimes taught as part of a treatment approach called the Camperdown Program (Google it). I can only comment on what happens based on Australia, however Australia at the moment is leading with its research around treatment and management of stuttering disorders globally. So I suspect there’s a good chance this is what may have been taught to you