My child, aged 4-6, is currently attending kindergarten/daycare. Do I need to provide a schooling letter/surat akuan as well?

If your child is attending formal school, the school administration should be able to provide the letter without any issue, so it’s best to prepare it. However, if your child is still young, such as 4 years old, it should not be a problem if you just don’t mention that they have not started formal schooling yet. That said, showing that your child attends school in Malaysia can serve as a strong supporting document for your application.