@mtrhowe85. I am no expert here but do grow and root a lot of plumeria. For me at least, when I am rooting cuttings, seeing leaf-growth is simply an indication that (perhaps) there is root growth. The roots are what you care about, not really the leaves. A cutting can grow leaves but still have no roots, though those roots should be close to forming. Without roots, your cuttings really can't utilize water per se. I will just mist my cuttings every week or even every other week. I don't water the 100% coarse perlite I root mine in. Watering the rooting media with plants having roots invites rot.