Hey tisme, that would wear anyone out! Be kind to yourself. The NDIS is tough to navigate. It took me 18 months from my application, through a review, and I finally got accepted 2 weeks ago. There are advocates who will help you, or if you can find a social worker they should help. I know a lot of the advocates, social workers etc around here are run off their feet with it lately, they have a lot of people asking for help.
If you can put it off while you aren't well that might be a good idea, it takes strength.
Hang in there, things will get better if you just keep plugging away. Can you listen to mediations or podcasts while you're on the bus? They can take your mind off things.