i like using hasty prayer for that too, i prefer bogdan in that fight though because if i put springs down beforehand, you *will* get a bogdan proc (whereas with earthgore you might be on the cooldown still).

First of all, don't actually run Bloody Double Mara - use it to lower your vamp level, then use another more useful food or drink (I personally prefer Clockwork City filet or just the purple Witchmother's Brew).

I also prefer using Bogdan over Earthgore for Cloudrest but your mileage may vary.

Other than that, make sure mechanics are getting followed - orbs/creepers are getting killed and mechanics like frost and fire (if doing +1 or more) need to not overlap, the AOE that follows players around needs to be kited outside of the group as well. Other than that, just healing like usual - extended ritual, channeled focus, springs, orb spam, etc.

If you have a lot of Nightblades in your group, soul siphon/refreshing path/funnel health can help with keeping people topped off if you're having issues, also separating into two groups for execute is an option.

Mapurr's Cloudrest HM video on Youtube might be a good video to check out if you have questions about positioning/timing. I think one of the Hodor healers has a video out as well.

more classes need offheals, not necessarily in the form of a spammable but in some other ways (like with vaoh's reformed warden lotus blossom)

I'd suggest at the very least every dps in your group should slot a self heal of some kind. After topping up the dps with springs or hasty prayer, I'd probably bol spam whatever is left on the tank after a resto heavy for major mending.

If your group is still struggling, or your tank is kind of soft, you could have a dps with mend wounds assigned to focus heal the tank.