One word: play. I didn’t go to Unix school or do practice reps of building networks. I stayed up late nights building weird and sometimes nefarious projects. Similarly, I have mediocre results when my schedule only allows BJJ classes but markedly better results when I can just go “play” Jiu jitsu with others. Just go get reps doing something you love, in an experimental and playful manner.
The standard BJJ classes (warm-up, technique of the day, sparring) are pedagogical black holes (BB here), anything else decent enough is better.
the wikipedia page on BJJ ( https://en.wikipedia.org/wiki/Brazilian_jiu-jitsu ) claims that live drilling ( https://en.wikipedia.org/wiki/Aliveness ) plays a major role in training and development, which suggests that it should be part of BJJ classes, but the way it is described, suggests that it is more similar to "playing", which, apparently is not part of BJJ classes. so how is sparring done that it doesn't have the desired effect?
i also wonder why other sports (in particular other martial arts) should be any different.
ps: i take it that BB means Black Belt?