Tennessee Code Title 36. Domestic Relations § 36-1-119

(a) Unless the child is related to the petitioners, a final order of adoption shall not be entered before the home study has been filed with the court and before the petition has been on file at least six (6) months and before a final court report is filed with the court, except when the order is based upon a petition for re-adoption pursuant to § 36-1-106; however, the court, considering the petition as a whole, may deem it in the best interest of the child to reduce the waiting period to three (3) months.

(b) If the child is related to the petitioners, the court may, in its discretion, waive the six-month waiting period, the orders of reference, the preliminary home study and home study, the order of guardianship or custody, and the final court report and may proceed to immediately grant an order of adoption.

(d) If no appeal has been taken from any order of the court, the court must complete or dismiss the adoption proceeding by entering a final order within one (1) year of the filing of the petition, unless the petitioner shows good cause why such final order should not be entered.

(e) If an appeal is taken from an order of the court, the proceeding must be completed by the court by entering a final order of adoption or a final order dismissing the proceeding within nine (9) months from the final judgment upon appeal, except for good cause shown by the petitioner.