Coco's not eating.

He's still not eating. I tried to giving him canned Tuna, his cat food, chicken broth... I tried putting some on his nose, put little pieces in his mouth. He's still not eating. I have an appointment with the Vet tomorrow again. I'm so sad. I have to draw 40 cute happy animals, and it's so hard at the moment. How can I draw cute happy animals when I'm so sad. T__T