just email [email protected] with your reservation number and request the change but keep pricing
That is what I did, and below is their response
Thank you for this tip! I emaild and received the following response. Not too sure if this means i'll be put back at the end of the line.
Thank you for reaching out. You can make changes without being updated to current pricing however changes may impact your estimated delivery date. There is no way to find out how the estimated delivery date will impacted.