Our 6 mth Sheltie has a huge abscess in his throat, cheek area. he was put under general An, they did an ultra sound but they didn't find a cause. They drained it and he is now on antibiotics broad spectrum and an anti inflammatory if he needs it for pain- he doesn't seem to be in pain so isn't taking this.We r giving him rescue rem, arnica tabs, vit c, probiotics. He is his usual lively puppyish self and eating very well. (home cooked balanced diet). He's back at the vet next week to check progress and maybe get a more specific antibiotic if needed. They are talking about CT scan if necessary..Any other specifics we can do for him to recover from all the drugs and help the still quite large abscess to heal quickly?