For a child passport, you will need to apply for a new passport using the DS-11 Application Form for New Passport.
For an applicant who is seeking expedited renewal services, you are now able to submit your DS-82 Application for Passport Renewal with any passport expediting company without any travel plans to have it expedited within 12 business days.
All other application types (for example, renewing a passport or getting a child passport) should take 3 weeks.
It can take longer if more information is needed or your application hasn’t been filled out correctly.
The time it takes to renew your expired passport depends on where and when you apply for your passport renewal.