These look pretty solid. The depth of rep 1 looks to be just right, so I would work toward that and refrain from going lower; the last few reps were lower than you need. I would also work on getting out of the bottom immediately. You might not have been trying to pause at the bottom, but there is a slight pause. The bottom of the squat is a stretch reflex, so use it.
More from a programming standpoint, I would suggest you think long and hard before de-loading. Yes, you want form to be on point, but if you drop weight when you have form failure, you'll never get out of the 200's. If your knees are caving in, just make it a point to not allow that to happen. Your form looks pretty good here, but good form is easy when the weight isn't heavy, relative to your current strength.
-aspiring SSC