Hello! Im so sorry to hear your little one is sick. I rescued a retf about 2 years ago that had several different infections and was very poorly cared for. some of his lesions were similar to your pics. The petshop i got him from was actually keeping him in a hermit crab enclosure. .. YIKES. ... anywhoo. I live in area where exotic vets are few and if you ask them about frogs, they're like " yea i think i can help". I was introduced to Dr. Frye of Milan animal hospital. He is an awesome resource! You can email/ call his office & send pictures. He will then offer assistance with diagnosis & you can buy the meds via mail. Im not sure about sending meds in the mail to Nova Scotia, but you could send him the details & pics & he can at least give you some direction. 734-439-2273, or dr.frye.vetatmilan@gmail.com . With his help, my little Felix has done very well. Hopefully this helps!

Goodluck to you & the little one!
Lisa