Wait for your child to sit up independently and support their head in a helmet...

https://www./parenting/when-can-a-baby-go-in-a-bike-seat-an-age-by-age-guide/

Wait for your child to sit up independently and support their head in a helmet before riding. Use a trailer for infants. Front seats offer great views, while rear seats provide extra stability. Always prioritize comfort and a properly fitted helmet.