Rearward-facing seats provide greater protection for the baby's head, neck and spine than forward-facing seats. So, it is best to keep your baby in a rearward-facing seat for as long as possible. Only move them to a forward-facing once they can sit up unaided and they have exceeded the maximum weight for the baby seat, or the top of their head is higher than the top of the seat. Or, you could consider using a larger (group 1 or group 2) rearward-facing seat.