Skip breakfalls until nage actually throws you. When we do jujigarame I usally end up doing a back/sidefall rather than a breakfall unless nage is doing a really good throw. And when nage actually throws then the breakfall is easy.
Getting over the need to do fancy ukemi to crappy waza is a good starting point for safe practice.
I don't know, sometimes the really bad waza require outstanding ukemi not to get killed. lol. Yeh, most of the time I do that for juji aswell, that little slide onto the mat, but in my class for fear of injury we always are instructed to do it very slow. So a breakfall would be quite difficult and dangerous really in that case.