SE should make one of those timer devices, that's synced to game time and counts down all the timers for all the content, and be able to set it to alert you when things are about to begin or become available.
I spent literal HOURS trying to get the last behest I needed for the achievement, and was spending time out of game to pass the time while I waited...but I kept forgetting about it until it was too late. I'd always remember a minute or two (sometimes even mere seconds) after it was too late, and then I'd repeat the process, continually forgetting over and over....
So I decided, I needed a physical, out of game, content timer.
If I recall correctly, XI had one...so... XIV should also have one.