Sorry for the late response I was working a expo over the wknd but I should of mentioned when doing the shower trick keep the water Luke warm not straight cold but good you got him drinking try supperworms they always love those most of the dewormers don’t effect them you can give as much as you...
The mishape is from him trying to get it out I would try to flush out then do vet for the paste for infection you can actually get it online it’s the same stuff used for dog and cats
You can always try the shower trick to see if he’ll drink but a plant in the shower point the water at the wall and let it bounce on the plant some times it takes a while for them to start drinking could take up to 15 mins to get them to drink when doing that