#1 TIP: ALWAYS have shields on your dps. Pressing it on cd will help mitigate so much damage throughout a match
Use pain supp/barrier at high hp so it gets more value
Rapture is good if someone is low, and/or multiple people are taking damage (and barrier isn’t a good option at that time). Sometimes you’ll need both rapture and one of your other CDs if things are going particularly poorly
Attonement healing is more of a bonus than something you should necessarily be focusing on. Definitely make sure you’re you’re keeping attonement up on everyone with power word: shield and renew, since ot makes your heals and shields stronger via your mastery
You generally want to use the periods you have barrier or pain supp going to help do damage or go for cc, if the other healer is out of position and falling behind. I usually just try to keep purge the wicked up, penance enemies generally, shield, then do schism + 2x mind blast before going back to the first couple of things. I don’t smite very often unless there’s really nothing else to do.
As for duel, you have a few options:
-put barrier on DPS since it still works
-target yourself with PW: Radiance near the dueled DPS, since the aoe component will hit them
-fear if you are standing on top of the DPS, since I believe it should still hit the rogue.
Otherwise,unless you can pre-pain supp the dps, they’ll have to press their own trinket/defensive/cc and save themselves.
Losing last season’s tier has really made shields feel pretty weak at some points in the game, but they definitely still put in most of the work as long as you penance before them whenever you can.
Oh, also: make sure you use your free flash heal procs, they are lifesavers (literally). I’m sure someone else will point out anything I’m missing, but if you have any more questions I will do my best to answer :>