We have had to deal it RI's and my vet is on speed dail. Do you have belly heat or back? If you can get it on belly heat that would be best. Get it to the vet asap and get it on meds.

We had one get a RI when we first started breeding two years ago. We had back heat on our racks. So, we got a tank and put a heating pad under it and got the temps in the lower 90's. We had a dark sheet we put over it to make is dark for the snake and help with stress. I took it to the vet, got the pills and made sure not to miss one dose.
Now we have a racks that have belly heat to prevent that from happening again. Just to be save be sure its not around no other snake if you have more. It can spread and will.
I hope this helps and I wish you luck.....