Georgia Requesting Schedule C Line Item Proof

2022 was my first year having my own business and filing a schedule C on Turbotax. It is true that the first year of business is the hardest and in my case involved a lot of initial investment. My Federal refund was about 85% of what was withheld, which was deposited within 4 weeks no problem, however the GA state refund I requested was only about 42% of what was withheld but months went by with no deposit. Well today, 12 weeks after filing I received 33% of my GA state refund and this letter in the mail:

GA DOR Schedule C Request trim.jpg

I am guessing this is what you would call an audit of my schedule C correct? So it looks like I only have 3 weeks to submit my business income and expenses categorized by line item, but I don't really know what that means and in what detail as it provides no examples. Do I just take an excel document and put in the numbers for each individual income and expense item and submit it? Or do I need to also provide dates, receipts, 1099's, logs, etc.? If its the latter then I have literally thousands of documents. How would I provide that in an organized manner?

 

I don't even know how to find the actual expenses and profits submitted by Turbotax as I no longer have access to the input portion of Turbotax when logging in, but instead just the 118 pages of tax documents that it spits out at the end. Where can I find these important pages/numbers in this 118 pages of documents?