I would contact Vocational Rehab or also called the Department/Bureau of Rehabilitation Services in some states. They can help with a retraining plan to help find a new career, which also includes paying for education if that is required for you to get you started and throughout your education towards retraining in your new path. They can also help find additional scholarships and other hidden monies in places. Talking too with the financial aid offices, there are always hidden grants and scholarships out there, especially in the field you go into, it is just a matter of finding them.
I hear and know your frustration with going back to school with financial aid and not being able to get it later when changing to another degree for reeducation and retraining. I ran into this too. Voc Rehab helped. Good luck in your pursuit and in your education! Hang in there!