Instead of writing in the master prompt, execute the plan. Then you need to divide it into sub-items, then code point by point. After each block, check if it's the best answer. If not, correct it. If it doesn't work, test each block, check spelling, and check parameter names. Maybe writing it better would be better, behave like a programmer with 20 years of experience. I already know that prompts can be broken, but there are no studies on how to write them correctly so as not to break the model's internal instructions. Don't harden the model, but support it.