Accelerate that techinique
I've done this technique on my disc brakes for years, cars too! With cars
you just lay something heavy on the break pedal.
You can do the same technique without having to wait overnight for the laws of bouyancy to make those little bubbles rise.
While you have the lever clamped, very lightly tap on the calipers with a rubber mallot or something else made of rubber. Turn that front wheel thru the complete turning radius, stopping every inch or two and tapping some more, go thru the complete radius a few times. Then move to the lines starting at the bottom and working your way up to the resevoirs,
I usually just flick them with my fingers, again turn the wheel a few times
while you're doing this. 10-20mins instead of overnight!