An important distinction
1. Some children bring little experience with music to their first lesson. They require music lessons at the piano. Here they explore the concepts of time, rhythm, metre, pitch, dynamics and improvisation.
2. Children with experience with music can proceed directly to piano lessons. They understand the basic concepts, if only intuitively.
How does a parent help prepare their toddler for lessons? I understand children like what they know. So… if you want them to play classical music play classical music in the home. Make it part of their normal everyday experience. Ditto for country, jazz, or pop.