People that say they did the 80 items casually in 3-5 weeks are lying or insane. I did two relics. I am aware of how long it takes(except I didn't do beast tribe). You get 1 esoteric item per day doing all your roulettes & half a poetics item. Doing hunts, a few maps, getting bonus clear tomes for coil & ex primals AND doing all my roulettes/Alexander, it took me from mid-late December to early-mid february. My second much more casual very little of anything second relic took from february to late may.

IF you also did 4 different Beast tribes you can get an extra 4 items per week(6 days rly)

But "casually" without any extra grinding & maybe some beast tribe there is no way it will take less than 2 months. (9-10 weeks)