Preservation Mana Issues

I have come to terms with the new Preservation (and dare I say, I still enjoy maining the spec). I miss Spirit Bloom and Echoing Lifebinds, but there’s no point in beating a dead horse and I’ve already made peace with the fact that they’re not coming back. The one thing that I’m having a hard time dealing with however is Preservation’s mana issues. I feel that we oom 2-3 times faster than every other healer and I think the culprit is Dream Breath and how much each hero tree emphasizes you to use the ability so much despite how much mana it costs. I think the mana cost of Dream Breath needs to be reduced by at least 50%.