I guess the simplest answer is to train you weak spot. Maybe add some rack pulls starting at your perceived weak height, or add some paused dead-lifts, pausing the bar at mid shin.
Its hard to be more specific because we don’t know why you are weak at this point. Do you have a weak upper back? Is it your glutes ? Etc. Etc.
Maybe throw up a video of your deadlift and then someone may be able to give better technical advice.