Have you ever been asked to teach music to a 3 or 4-year-old? Do you turn them down? It’s completely within your right to only teach older students. Some teachers just prefer to have students start at an older age, and that’s fine. Let me try to make a case for taking younger students, though.
If your studio is not yet full, you’re turning away income and perhaps discouraging a parent from getting lessons for their child until they are older. There are real benefits to early childhood music lessons that I don’t think should be ignored.
When Can Young Children Start?