What are my options to get out of the guard in the middle of a contract?

So I need options. I’ve been in 13 years have 2 left on my contract. I’m in the Arkansas national guard. Do to an injury not duty related I’ve gotten a permanent profile. After the PHA they said since I only have 2 more years left on my contract I can just finish it out and not reup. Honestly I lose money going to drill I don’t take advantage of any of the benefits I’d rather just be done now. I don’t really want to continue to drill and hold a 5 slot for 2 years waiting it out. What are my options I’m already looking at taking a demotion to free my slot up for someone who is waiting on it but is the IRR an option. How long does medical separation take. Do I still have to drill while going threw the medical separation period. I had all intentions of retirement and now that it’s not an option I have no motivation to even be there much less be there and not be able to do anything.