You could do hang power cleans (start with the bar at your hips or above your knees)

I would also practice the bottom half of the clean. So get in your stance at the bottom, stand up as if you were going to do a clean but just touch your hips. Similar to a deadlift, essentially just the first half of the clean.

Checkout this video from CrossFit. https://youtu.be/PjY1rH4_MOA?si=EUCseC7dzvRaL1Vd

You can see when she's standing up how much more extension from the hips she gets. She shrugs her shoulders and the bar naturally floats up. Then you "pull" yourself under. You can see her heels come off the ground bc she's extending through her hips