Totem Destroying Script

[Splondir]

As a result of Totemic Restoration, I've been using /script DestroyTotem(2) to remove Earthgrab Totem early to trigger the lower cooldown. However, the slow effect is not applied on the initial tick, only on subsequent ticks (every 2 sec), so I have to time my DestroyTotem manually. I am looking for a script basically does this:

/cast Earthgrab Totem
/script if time > 2 then DestroyTotem(2)

If possible, the code should stop running if I drop another earth totem. I am willing to add a macro/script to every earth totem if needed.

I also would like if Tremor Totem could be instantly destroyed, or at least in under 0.5 seconds.