Does increasing what my child can enjoy and likes also count as developmental support?

Yes. In common: likes, fun, and security are the foundation of motivation, learning, and self-esteem, and the center of quality of life (QOL). From a favorite activity, relationships, language, and skills also expand. What the family decides: how to balance "training" and "enjoyment" is fine to differ by family. A guide: is something "the child truly enjoys" in the schedule? Increasing enjoyment is fine developmental support too.