If you are not sure about having your child baptised at this time, you may want to think about having a service of Thanksgiving for the Gift of a Child. In this service, you thank God for the gift of your child and the child is blessed. You do not make the same promises as in the Baptism service. If you choose to have a Thanksgiving, you can also have a Baptism service for your child at a later date.
Your vicar would be more than happy to discuss a Thanksgiving service with you.