How do you specify the duration of tasks, and what do you do to stop yourself from gaming the task (i.e., waiting it out with low effort) if you really don’t feel like doing it today?

I guess it depends on your tasks but I do it until I complete it basically. Usually the tasks themselves on Fabulous have their own time limits if you want a guide for time. When I don’t feel like doing any of my tasks, through mindfulness and meditation, I’ve learned to shut down certain thoughts, and I mindlessly do the tasks. So, unfortunately I can’t help much in that regard, I overthink so much that when these tasks say “do this” and “do that,” I just do it without thinking or questioning it. Hopefully you can view it like that; the most important thing is that you can only change if you want to change.