It's pretty simple. Just click on the carrot to feed it, click on the water to make it drink, click on the sleep button to make it sleep and click on the ball to play. If any of these gets to 20 (except play) then Cinnamon will die.
All of the coding is from me and the artwork is from scratch. If you want to meet this rabbit's best friend, go to this link: https://scratch.mit.edu/projects/357964578/