I’ve always eaten out regardless of financial situation. Always felt like the one thing I could justify and kinda afford. I’m really sorry about your situation. No financial advice from me about budgeting or buying food at the store etc. your life sounds very complicated and you are doing your best. I second and third the pursuit of disability. Be aggressive. It’s meant for people in your situation. We all (yourself included) contribute to those programs to help exactly this situation. We don’t want you homeless, hungry, hopeless. It may not seem like it but our programs are there to stop it from going too far. Best of luck.