My bun has sore hocks too they seem to be getting better they were really red before but when I noticed them I used chlorhexidine (might have spelled it wrong) and soaked her hocks 2x a day 20 minutes. There are certain measurements (I got this from 101rabbits YouTube) I Also started to use more...
You can use an x pen from chewy i think i might have gotten mine for 28 I’ll have to check not including shipping. The one I have is a step through so it’s easier for me to get in instead of jumping over :) i think all together was 32-35
I feel bad also for the elderly...here where I live it’s been “spreading” a lot. I think we might have had it already but they have know just had test done.