Don't commit to blocking. You are consciously trying to push thru just don't do that. It's better to just stop speaking, take a 2 second pause and then try the technique again. After practicing them you will get better, you aren't going to master them right away. And as you get better your fluency can gain momentum just keep trying. I'm still working on it as well, but it does get easier. But I don't use techniques from a slp they never worked well for me very well either.