In this case, you want to inquire about financial aid for preschool fees. Many cities and towns offer financial aid for childcare, although the terms and conditions may vary. You can ask the school or your city/town hall about these procedures. It is good to talk to teachers from time to time about how your child is settling in and enjoying school life. These things will help to build bonds between school and home.
Conversational flow and useful expressions
Your child's attitude
Attaching "~chan" to a girl's name or "~kun" to a boy's name is usually only done when addressing or referring to children besides your own. It is not very common to attach "~chan" or "~kun" to your own child's name, especially in public.