Messed up EPQ can I still do well?

Essentially what it says in the title. I'm typically a very diligent student and I planned my project meticulously (my supervisor has suggested this element will get full marks). However due to a variety of factors I missed the deadline for the first draft and now have no feedback to use for the real essay. I'd say I'm very good at writing school essays but EPQ is so long and the grade boundaries are so high and I'm freaking out a bit now. Do you think I can still produce an A* essay (I've got time) without having first draft feedback and if so, how can I ensure this? Thanks!