what I do is disconnect everything like your taking the whole bumper off, except I don't remove all the lower 10mm's across the whole bottom edge except for the 2 outermost ones to release the wheel opening molding. then the bumper can kinda be hinged down & out enough to change the headlight without having to take the bumper completely off. I do still disconnect the whole front edge of the wheelwell opening molding though & move it out from the bumper, but the fogs can remain plugged in & the whole bottom remain attached, cuts the work down a bit, especially the bending down under the car part.
the only "hard" part of the whole job is the 2 bolts on either side that connect the fender to the bumper. it also helps to have someone help while hinging the cover out to squeeze the lights out of there without stressing the cover too much, or use a milkcrate in the center to hold it so it don't hinga all the way down