It doesn’t seem like you’re using chain heal hardly at all and using healing surge a ton. I’d say try maintaining healing rain, healing stream totem, and cloudburst totem, then using chain heal to fill in the gaps. You can even throw in gift of the queen whenever it’s off cooldown for an extra bump since it costs no mana. Also, don’t be afraid to use healing tide totem when things get really rough! Like right after a huge hit to the raid’s health. Let me know how things work out!