Just had her to the vet this morning, fecal was negative for parasites but she has horrible diarrhea. That started yesterday. She's been listless and not moving much. Weighs just .6 pounds when siblings are 1.8 pounds. She was always smaller but now she's tiny and skinny. They eat Iams kitten dry, have been weaned from mom for 2 weeks. Mom has no interest in nursing them and I checked her, she no longer has much milk. Gave this kitten subq fluids, nutrical and have been syringe feeding canned A/D food all day. Still has diarrhea. I have flagyl on hand but she's so tiny I could probably give her 1/8 of a 250mg tablet. She's definitely fading away and I don't know what more I should do to save her.