You should be taking your child to a Eye MD ophthalmologist, ideally a pediatric ophthalmologist. If a child gets a chalazion they are very prone to develop more. There is a new prescription eyelid cleaner called Avenova that works extremely well to prevent more styes or chalazia. This is link: https://avenova.com/ Ask the Eye MD about it. Unless the scar is affecting the eyelid position they will probably wait much longer to see how it flattens out.