My secondary behaviors have increased like hell (Need advice for adult stuttering)

My secondary behaviors have increased like hell (Need advice for adult stuttering) Hi, I'm 28 years old and work as an English teacher at high school level in my country. My stutter is normally in the form of blocks & not being able to start voicing at the onset of sentence. For a long time, I have the habit of using avoidance behaviors with filler sounds like "uh" and "well", which makes my speech much worse than already is. When I was 16 years old (so 12 years ago), I received desentisization therapy where my SLP had taught me to reduce behaviors like this by keeping a tally of them every time I do it and stuttering voluntarily. Although this approach worked at the time, they relapsed later and are worse right now. Right now, it is practically impossible for me to use this approach again due to my job. I mean, if I stutter voluntarily, stay in the block and mark the number of my ticks on a notebook during class time, I can't ever finish the syllabus on time. It was rather doable when I was 16 as I was just a student. What would you suggest for someone in my position? Because of this, I have hard time in classroom management. Whenever I stutter or do the secondary behaviors, my students are distracted (understandably) and I often lose control of the classroom, which makes me fell incompetent at my job.