When I call them, they say there is no appointment and call next week. I just gathered some documents for my case and I want to submit them asap. If I go to the office can I get a chance to make an appointment??
All the big law firms have many lawyers participating in pro bono work. Esp. in Chicago, there is lots of them. Look them up and contact them directly, you don't have to go through NIJC. Big law firms: https://www.chicagobusiness.com/law/chicagos-largest-law-firms-2018