You are in the EXACT same position as I was. I never even knew what SQF was . I started in May and our audit was just this passed December. You can do it! It can be overwhelming to start from scratch but it could be a blessing in disguise because you do not have to decode or sift through old or poorly written documents you can organize and write it fresh.
My main advice to you is read the code and guidance document thoroughly. This is your bible LOL. If you can check off each section and say to yourself "yes I have this covered, written and implemented" you are gold.
Feel free to ask me any questions, as I was in your shoes not too long ago! I am happy to help :)
Edited by jperri, 07 February 2020 - 07:29 PM.