Visa: IR5, Mumbai Consulate
Mom
DQ date - 07/16/2020
Interview letter date - 04/18/2022
Interview date - 05/02/2022
Dad
DQ date - 03/15/21
No interview letter yet
Make sure you call USCIS to 'link' both their applications if they have not done so already. I didn't do it and once I got the interview date assigned they cant link it, it has to be separate interviews then.