Just submit the financial aid forms and wait and see. Does your kiddo have an affordable college option on the application list? That is what matters.
If you are not paying any rent, then that should free up some of your current income to help with college costs. Did your kiddo apply to CUNY or SUNY schools? With $100,000 income, I think the student would be eligible for the Excelsior award which I believe pays tuition. @sybbie719
On your other thread, you were inquiring about the Profile, and IDOC which makes me think you are looking at private universities. Is that correct? Are they schools that have very generous meets full need awards for all students?