I know this has been asked a few times, but what is considered power feeding? And what is "healthy" feeding?

Here is what I am doing at the moment:

Hatchlings: Fed 10% of body weight every 4-5 days. I try to feed every 4 days but sometimes I get lazy and I wait until the 5th day. I remember somebody saying that this was considered an acceptable amount to feed a hatchling. Can I up the size of the meal or feed even more regularly without it being considered "power-feeding"?

Adults: Fed 10% of body weight every 7 days

At what point does a hatchling become a juvenile and need to start being fed every 7 days, rather than more frequently?