Hello lonely one
THis is what the internet is great for - helping out when you're in an isolated environment!
I would recommend, if you are not overly experienced, looking at getting the patient a removable cast walker with a rocker bottom (brands vary depending on what country you are in), from your local orthopaedic/podiatry supplier.
Dress the patient in the normal manner, continue and wound debridements, and get them to *live* in this boot until healed, then swap over and do the other foot (hopefully without the first side breaking down again). May take weeks to months.
Cheap and cost-effective, and no special skills required.