Citizenship

I had my interview on mid of March 2021 in Los Angeles office which went well and quickly and the officer congratulated me for passing English, Civic and Interview, however she said "As I don't have your file here, I technically can't approve you on the N-652 and I have to request for your file and as soon as having your file here, I will approve it and you should have the approval letter and Oath initiation in 2-3 weeks" .
It almost one month passed and no mail was received and my online statues shows only "your interview was scheduled, with no estimated time". I called USCIS yesterday for the first time and an officer told me "our system shows no action has been done on your file since interview" Then she put a note on my file and asked me to call USCIS back in 2-3 weeks. I also talk with some lawyers and they said it's not unusual process (Specially in Los Angeles office) and it might take 2-3 months to get approval.
I appreciate letting me know if anyone has same experience, in this forum.
Many thanks