We sent our renewals in December. Filled out paperwork online, printed and sent in with DIY photos. Not expedited.
Passport status:
Received 12/22/20
Checks cashed 12/23/20
Status "in process" ever since.

I'm REALLY hoping that some of the luck I'm seeing here rubs off on us!

UPDATE:
2/14: Received email that passport was in process.
2/18: Received email from Passport office that passport application was approved, book was being printed, and estimated arrival would be 2/24.