(a) By sending written notice to TDI, an insurer may waive the deadlines by which the Commissioner, under Insurance Code §2301.006, must approve or disapprove a form before it is deemed approved.(b) An insurer that waives the deadlines referenced in subsection (a) of this section may opt to withdraw its waiver. For the withdrawal to be effective, the insurer must provide written notice of withdrawal and the withdrawal must be acknowledged by TDI in writing. Subject to §5.9324(d) of this title, the deemer period described by Insurance Code §2301.006 will begin on acknowledgement of the withdrawal.