How long it takes to receive an oath in Denver CO

[Jbee]

10/23/2017- sent to Phoenix, AZ lockbox via USPS
10/26/2017- NOA 1 with IOExxxx receipt number
10/28/2017- Biometric scheduled (online status)
11/16/2017- Biometric done at ASC
01/10/2018- online status updated - Interview has been scheduled
02/14/2018- Interview (passed) but decision cannot be made because of pending ROC. Officer has to review it first before he will approved my n400.
02/20/2018- online status updated- We placed you in line for youth ceremony and will send you a notice. .......

I file under the 3 years rule.