I know that feel. On top of being a student at AU, I'm a library tech at another college and I see students getting overwhelmed by citation styles everyday.
Depending on how in depth you want to go, I have a number of suggestions:
APA 7 is newer when it comes to citation styles and I've had some instructors not realize there have been changes.
You should be able to compress the file, use something like 7-zip.
Or if you're on Mac, follow these instructions.
Going forward, you may be interested in using an app like Zotero. It helps track all your sources and will generate citations and bibliography. It's not perfect, but it does speed up the process.