Hi.
My GC was approved back in February 7, 2019.
ROC in February 2021
14 May, 2025 submitted N400 marriage based.
18 December, 2025- interview scheduled notice.
26 January, 2026 - Interview in Denver office. My case Was was recommended for approval in the office but was told I had to wait for the immigration office to send me the official update. Nothing since then.
Hope this helps with timeline for others.