no this isn't normal

you can sue them

what was your rfe?

Mine was was Nov 2020 too, I got rfe on medical on june 2023 and responded immediately, nothing since then. still waiting on God for good result..

mine is sept 27 2021 I just got off the phone with a USCIS agent he said he doesn’t see any i485 for me with the receipt number that I gave him so he requested someone to give me a call back in 72 hours