Use wild growth more, keep a higher uptime on lifebloom, harmony is at about 70% uptime, remember to keep it up, it's bonus healing. I would suggest using Dream of Cen, and Soul of the Forest for the majority of the encounters, just wrath during low damage periods, and use swiftmend+wild growth and get high on the meters. I realise keeping a high uptime on lifebloom isn't always priority, as you can see from these logs, I was slacking on it just because the tanks weren't really taking much damage, but I was also missing out on free regrowths.
https://www.warcraftlogs.com/rankings/characte