4 year baby food and how to gain weight and my daughter not eat solid food she drink only milk so what I do then she took food

A. Please restrict the amount of milk twice in a day to maximum 500 ML because if you continue to give milk like this it would be unhealthy plus the child will keep rejecting the food so please make sure that you’re feeding food to the child not giving milk and get the nutritional issues maybe your child is low on some nutrition that is why this is happening