what do you do when your toddler dont eat?

There could be several reasons your toddler isn't eating. Getting to the root cause could be the key to finding out why they aren't eating. It could be anything from teething to the fact that they simply aren't interested and their taste has changed. I would try different types of food and also start by asking them simple questions like: "Don't you like avocado anymore", "what would you like to eat", "how about some porridge?", "would you like me to read you a story while you eat?" etc.