That will take a long time to heal + will never look like it did before but thankfully it's healing. At this point , discontinue any hydrogen peroxide, it actually can destroy good tissue with bad. The raw honey is all you need , it does kill germs while actually sterilising the area + preventing bacteria from growing. All that and it also promotes tissue regeneration....so no need for anything else other than the raw honey.
Be sure there are no loose bugs in the tank that would go for her wound. Is he eating much ? He's pretty thin, but then he must be in some pain which could affect his appetite.