I don't mean to sound negative, but seeing as your are a january 2019 applicant. Many people after you have passed on from this. I would first order GCMS notes and then inquire in depth with LVO as to why it has taken so long. As per your timeline, even with covid measures, you are well over the given timelines. That's just if something is wrong.
POSITIVE, Seeing as your ADR was just submitted in dec 2020, they are about to approve your eligibility, send you the re-medical, and it is roughly 2-3 month wait from here. I'm just going off of the timelines that everyone else is moving at. But do order GCMS notes. Positive though, POSITIVE !