How to get a 9 in GCSE DT?

Icl im finished, i got done dirty by my dt teacher with 66% for my NEA. He has always hated me from day 1 when i told him i am gonna get a 9 in Dt but my behavior in class used to annoy him so much. so i think he marked me out of frustration and basically prevented me from reaching my dream and even with 100% on the theory the highest i can get is just scraping an 8 with 6marks over. I've tried Seneca but i cant get that kinda information into my brain its like reading from a book and im a visual learner with an experienced teacher doing a walkthrough. However I've checked the whole youtube and not a single teacher has uploaded an aqa DT practice paper walkthrough. So ngl imma just have to aim for a 7 becuase im revising rn with untried revision techniques. Any last minute tips before I meet my fate

same as 2023 or 2019?
cause in 2023 it was this, with 175 being a 9 200 175 161 147
and pre covid it was this, with 165 being a 9. 200 165 151 138

i flopped the exam ngl, i misinterpreted the first 6 marker, and did the orthographic projection wrong in the second 6 marker, think id be lucky to get an 8 atp

I am in year 11 and I do AQA DT.
I need general tips on DT as it is my worst subject currently, I want a grade 9 but I am at like a 7 rn.
My NEA is due in a month but I dont know how to revise theory as there are almost no past papers online and my notes are bad
I got 75 on my january trial exam, which is a 7, I also got 76 in my end of year last year, so I'm worried that my performance is declining. The extremely high grade boundaries dont help. I cant afford to spend much time on my NEA powerpoint as I have to revise on my other exams but it used to be around a level 7 before I improved.
How do I increase my grades quickly as my NEA is way too long and theory is confusing to revise for.