What works for me -- and I don't know how I got into this habit, but it's there:
Inside the camper I lower the front, I lower back (and latch the little internal slide-bolt).
Then I step out onto the bumper, reach up and latch the back-right latch. Step left across to the other end of the bumper (either after closing the door or stretching around the open door) and latch the back-left latch.
Then I jump down off the bumper and walk around the rig latching the other four.
So, for me, lowering the top and latching it are part of one operation with no gap for distraction.