As someone who has fucked up their knee, back, wrist and shoulder using poor form and heavy weight, my advice is to back off the weight, and hammmer hundreds of reps with crisp proper form so it becomes ingrained into your nerves and muscle.
I do NOT mean sets of 100 either. I just mean alot of lifts with picture perfect form.
You will not see alot of olympic lifters doing alot of reps.
One reason why is that form tends to break down the more reps you go into a set and you don't win gold with poor form.
I was taught no more than 3 reps with a working weight.
I learned this the hard way after shoulder and knee surgery.
When you lift a new PR your body will naturally be frightened by the weight it feels and instinctively resort to what it knows best. If you have taught it perfect form, from hundreds of reps, thats what it will do.
When Lucas Matthysse or Floyd Mayweather step into the boxing ring, 99% of what they do is pure reflex from hundreds of rounds of sparring.
I like watching guys who are good too, to help paint a mental picture as i approach the bar.
One of the best ever, couple days out from the Worlds so he's just keeping sharp, nothin heavy. He'll back squat for you at the end of his workout....after snatching and CJ work. Note the elbows nearly vertical.