When I first started writing my supplemental essays, I felt like I was stuck in a loop of creative burnout. I used the same core ideas for different prompts but ended up rewriting everything from scratch each time. Then, I discovered how to effectively reuse my essays by tweaking them to fit the new questions. For example, if you have an essay about your passion for environmental science, use the same base content and just shift the focus slightly depending on the prompt.
Making small changes still retains your unique voice while saving you a ton of time. Keeping a 'base essay' and adjusting it for different schools can be a game changer!