Quick update on Dad's progress -- he has received his oath letter in the regular mail yesterday. If everything continues on track in the next two weeks, he should be able to take his oath on August 23. That would make 132 days from application date (just 4 months and 10 days), which is actually very fast.
Unfortunately, we are still waiting for Mom's status to update and starting to get worried -- her case was tracking completely synchronously with my dad's, but now it has been over a week since Dad's ceremony was scheduled with no movement. Not sure why the cases got separated after both parents were given the same outcome on their N-652 Results form...
07/03/18 GC approval date (both)
04/05/23 Eligibility date to file N-400
04/13/23 N-400 application filed online
04/13/23 LUD: “We received your Form N-400, Application for Naturalization, and sent you a receipt notice.”
04/13/23 LUD: “Case Is Being Actively Reviewed By USCIS”
04/13/23 Receipt Date (estimated wait = 9 mos.)
04/13/23 I-797C NOA: Receipt Notice posted in myUSCIS
04/13/23 I-797C NOA: Biometric Reuse letter posted in myUSCIS
04/14/23 Email: “We have taken an action on your case” (both) w/ no further update in account
06/05/23 LUD: "Interview Was Scheduled"
06/05/23 I-797C NOA: Interview Notice posted in myUSCIS
07/11/23 Interview — both passed!
07/11/23 Received Form N-652, Naturalization Interview Results (Recommended for approval)
07/11/23 LUD: “We recommended that your Form N-400, Application for Naturalization, be approved. Your case was submitted for quality review.” (Dad only)
07/11/23 LUD: “Oath Ceremony Will Be Scheduled” (Dad only)
07/12/23 LUD: “We recommended that your Form N-400, Application for Naturalization, be approved. Your case was submitted for quality review.” (Mom only)
07/12/23 LUD: “Oath Ceremony Will Be Scheduled” (Mom only)
07/31/23 LUD: "Oath Ceremony Notice Was Mailed" (Dad only)
07/31/23 N-445 Notice of Naturalization Oath Ceremony posted in myUSCIS (Dad only)
08/07/23 Oath Letter Received via US Mail (Dad only)
08/23/23 Oath Scheduled Date (Dad only) -- at Detroit District Office
XX/XX/XX Oath Letter Received via US Mail (Mom only)
XX/XX/XX Oath Scheduled Date (Mom only) -- location?