Shallowly fill the tub with enough luke warm water to cover your denim.
Turn your denim inside out.
Let soak for fifteenish minutes.
After fifteen minutes.
Roll and rinse.
Let drain, don't squeeze.
Don't hang on the tag.
Drip dry more.
There will be blue dye everywhere. Fret not it didn't stain my tub.
You guessed it. More drip drying.
Like watching paint dry. Go to bed, they will be dry enough to wear in the morning.