I have always deadlifted in a conventional stance and have never had problems with hip mobility with my squat. Recently however, I found that when trying to follow “cues” in the sumo deadlift, such as spreading the floor and opening up, that I am unable to do so and end up mostly doing a “conventional deadlift” with just a wider stance. I can sink a squat ATG in flat shoes but for some reason, I seem unable to properly open my hips to utilize the leverages involved in deadlifting with a sumo stance.
What kind of routines would help me in being able to open up my hips and “drop” to the bar and be able to pull the bar up comfortably, without turning into a more or less conventional deadlift.