Thanks for the reply. Yes I have a work contract, great idea! To foward the contract and a short explanation letter stating my situation (my current income will not continue when I move), I'm assuming I should upload this to the main portal where I uploaded my "AOS supporting documents" right? It just states to upload.
A bit confused cause another / seperate RFE says to specifically upload info via the inquiry form ("Please resubmit the correspondence in this document at: https://nvc.state.gov/inquiry"). That RFE is just contact info for an accountant letter I uploaded. Thought inquires were for asking questions, not for adding additional information/documents, but apparently for this specific request, it is not.