Hi - I know how distressing it can be, my little siamese kittens got a dose of cat flu at 15 weeks, despite being vaccinated against it but they pulled through and are totally fine now! Their eyes cleared up with some drops after a few days but they both stopped eating after the antibiotics which made them even worse so hand-fed them and within 3 or 4 days they really improved. I hope Coco gets better soon!