Each MOC has different application dates, procedures, requirements, essay prompts etc. Some will want test scores sent from College Board, some will accept emailed scores. Every one is different. We had a binder with a section for each SA, each MOC and NROTC. Dates were put on white board and prioritized in order of application close dates. Prepare your resume, ask for a mentor/teacher etc to review it. This resume is not for a job interview, it doesn't have to remain one page. You need to include your accomplishments, leadership, athletics, awards, skill sets.
I can say this, I have seen some silly questions get asked by candidates in group chats etc, READ THE INSTRUCTIONS. Rarely in this process will you find something that cannot be answered by you, reading the instructions and drop down menus etc. Do not harass the MOC personnel in charge of nominations. You need them on your side. Be professional in any and all communications with them, no 'lol' or 'my bad'. (yes, I have seen and heard of that happening).
You are wise to pursue this early, you can be organized and ready to roll when applications open. Keep improving your self, and practice and train for the CFA and use Khan (or another site) to improve your test scores.
Good luck to you!