I believe if you're just changing the type of accessory work exercise then that is okay. I'm not sure what your final goal is but I imagine it's something like "get stronger on basic lifts and either gain muscle/lose fat in the process". That's fine.
Main thing is your major lifts need to keep progressing and it's perfectly okay to change around the accessory work. But try to do more free standing, free space work rather than single plane, isolated, cable work. Not always, just something to think about. Again I don't know your lifting experience.
When you're stalling on the main lift it could be time to look at changing exercise, making sure you're eating enough, sleeping enough, then deload etc, in that order. Sometimes we stall on lifts, but I find it's just an off day usually I'm okay at the next outing.