The "deadlift should be ahead of your squat so I'm going to monkey with progression on one or the other" is one of the top ten stupid things novices say (along with "I think I might have been 1/2" high on my squats so I'm doing another 50% reset").
It's a general guideline of where most people end up, not a hard and fast rule of "you must be DL'ing more than you squat at all points in your linear progression." Also remember: if you are doing the standard novice program you are deadlifting after you've already done three heavy sets of squats. Your lower back is probably pretty tired at that point anyway. If you were to work up to a 5 RM DL max at the start of a week you'd probably find it's quite a bit higher than the fatigued one you're doing at the end of a workout.
My squat was ahead of my deadlift until this last year. I blame 1/2 of it on assuming the deadlift is a good grip exercise and the other 1/2 on assuming one set of deadlifts a week is sufficient stimulus for progress.
Turns out the deadlift is a shit grip exercise and a single set of 5 a week is really, really suboptimal deadlift programming.
Tried deadlifting without shoes? My impression is most people deadlift better without oly shoes. Not that this will equal much weight on the bar, but I can picture <5% difference from it.
Yeah, but is there programming that is going to result in faster deadlift progress than 5 lbs. a week for a mid/late novice?
That said, what doesn't make sense to me is trying to grind out LP when you're missing reps every other workout. That's where I'm at the past few weeks.
I'm either going to rotate to a triple + backoffs, or reset and do a 5 + backoffs. Not sure which is better.