"If things go as expected, without any complications, i estimate *** to be up in roughly 2-3 hours."
Complications can occur with anything you do, whether directly affecting what you're doing, or indirectly by pulling your attention elsewhere. Professionally, a good practice is to give the maximum time frame you expect something to take, with a notice that it may be completed slightly ahead of schedule.
At this point, i think most of us can hazard a rough guess to how long it takes abyss to be fixed by blade, after a typical patch. Emphasis on the fixed part there, as again even if it can be fixed in that time frame, doesn't mean blade would always be around to actually work on it and upload it. So fixing and having it up are two entirely different things.
On that note, unless there's some major complication to abyss, in terms of it being patched, something breaking, or maybe just major issues irl for blade even, then i don't honestly think providing an ETA for abyss to come up is even remotely needed. Nexon's been specifically targeting abyss, and blade's been on top of that in getting abyss working quickly. If you're really desperate, refresh mabimods once an hour to look. If you're not desperate, i'd say just check back every 3-5 hours, or whenever is convenient for you.