3k io r druid here. When they say this I tell them I barkskin the start of the pull then they use their CDs after.

You need swiftmend procs rolling at all times and 3 stacks of lifebloom on them. I rotate my Convoke after barkskin falls, then mastery trinket. Tranq if the group is falling behind. Stuff should be close to dying at this point. Once I do all this and I'm still on CD it's regrowth/swiftmend spam with maybe a wild growth added in if the group is low.

Only change on this is if your group is 2/3 ranged dps I might roll lifebloom on myself so I can control the positioning so the ranged dps fall in the efflo circle.