I do the same for DADGAD, Bee-Dubya. I set the 5th, 4th, 3rd and 1st string's to the tuner, then do the 6th and 2nd by ear. The intervals between the 2nd and 3rd string's are especially ticklish, and I listen carefully to the beats with the 2nd open and the 3rd fretted at the second fret.