While waiting for a travel document, ICE conducts a review every 90 days to decide if you should be released. The review is called a Post-Order Custody Review (POCR). As part of the POCR review, ICE is supposed to consider how likely it is that a travel document will be issued, whether you pose a danger to the public, and whether you pose a flight risk.
You and your family can submit documents to your deportation officer for the POCR review. Template letters and supporting documents are available here.
If you have been detained for more than 180 days waiting for a travel document, you may also be eligible to file a habeas petition. A guide to filing a habeas is available here.