Yeah, too early for you. I didn't realize you were so young until you posted your age the other day.
Get more volume in with lower weights. When you're pulling big weight it's easy to burn out going too heavy all the time.
I've only pulled 500+ from the floor three times since my meet in January. Once for easy singles around 525-535, the second time worked up to that 585 and the last at my mock meet where I missed 600.
Also,
@RodgerThat is correct, never miss reps in training. That 600 I missed was the first deadlift I'd missed in almost a year. 60-80% 1Rm is your bread and butter range.