Don't just practice the words you know. Identify the specific phonetic clusters that cause you to stutter or "drop" audio.
Using "SIS" (Speed/Integrity/Sync) methods, you practice "briefs"—shortened versions of common words or phrases. The goal is to reduce the number of physical actions required to produce a full word.
Use the "Push-Drop" method. Push your speed 10-20 words per minute (WPM) faster than your comfort zone for a few minutes, then drop back down to your target speed. You will find the target speed feels significantly easier.