It's about 14 months before my ETS date. Is there a desk job MOS to which I can reclassify?

I had 3 injuries in 82nd as a infantry man, I'm just simply not that athletic for this job, and my back after the injury is just not good enough to ruck with 65 pounds on my back. It seems like the only option right now for me is to either reclass through re-enlistment or Med board out of the army. I'm currently actively working on reclass to 17C through application but i don't really like the odds. If I was invoked from that, is there any desk job that's not so physically intense and is currently under strength? Also, if the reclass through re-enlist was approved, when can i pcs?