Switching from Ast to Whm and looking for tips.

[Risvertasashi]

I'm not having Mp problems even after Holy spam, but I am having problems with large pulls. With Ast it was easy collective unconscious + aspected benefic + Time Dilation= 4 or 5 gravity's, but with Whm is it just divine seal + medic 2 + regan= holy spam or something, because even with that I can't seem to keep the tanks health from dropping pass 50% after my 2ND or 3rd holy.

Firstly, welcome to the job. I don't recommend M2 in that situation--it's a slow cast and if you need more than regen (+ asylum when you hit 60), you're probably in trouble anyway.

You want to get a holy off quickly to stun the mobs and thus stop DPS on the tank for a little bit. That's really the key part. If the tank's still dropping that quickly, tell them to start actually pushing their tank buttons : P
If they're still dropping like a rock, probably very undergeared (but make sure your own gear is good--it makes a big difference on those heals), it may be better to just heal (use your judgment). Remember that benediction can be used in cleric stance, so you can experiment with how long you can stay in cleric's as long as you don't wait too long to push that bene button.

More general advice: WHM is all about precasting, which really just comes with practice in specific encounters. And use those freecure procs and regen whenever you can, that's your most efficient healing.