Open all the bleeders and let gravity do most of the work. I put a length of hose on all bleeders to route the fluid into containers. In under 10 minutes, I had fluid at all four wheels. Keep an eye on the master cylinder level.
I tried that at the right rear wheel overnight.... nothing. But a few slow presses on the pedal and I had fluid..
Went and bought a hand vacuum bleeder.... Saturday project