Have you concidered instead of CNA trying Unit Clerk in the hospital? If you are going to go to school when it's not busy you can study. Lot's of hospitals will help with money for school and maybe you could just do weekends. 2 - 12s or a 12 and an 8. I had a second job for for 6 months to finish my time in the State retirement I was only working 4 hours a night it wasn't easy but you do what you have to.
Mary