Good observation,
You are 100% correct, not all plants exibit this to such a degree that it is noticable. Some plants are far to woody to make that kind of pronounced movement, other plants can move even more.
As for sleeping, or being in a chill mode, naw the only plants that sleep are the ones that go into true hibernation. A young human continues to grow even in their sleep. Cell division continues, and it is demonstrated by what the plant can accomplish even in a 12/12 scenario. That's a lot of energy being used in the dark when flowering.
As for your light schedual, I think you said the answer yourself, you said, and I quote, "Right now, it's perky as all hell!" If something is going good, don't fix it.
I would think that you sure are doing something right. You might like this;
These automatic movements are called tropisms. The movement of a plant's leaves and stems growing upward and the roots growing downward in response to gravity is called gravitropism. When a plant's leaves turn toward the sun, the movement is called phototropism. Plants even seem to have a sleep cycle! When a plant closes its leaves or petals each night, the movement is called the plant's circadian response. How do plants know when to sprout in the spring? A plant's movement in response to seasonal changes in temperature and light is called photomorphogenesis.
Here are some ideas for you to think about:-
1. Plants move from place to place as seeds.
2. Plants bend towards light by growth.
3. The Sensitive Mimosa leaves droop almost at once when they are touched or hit by a raindrop.
4. The Venus Flytrap snaps shut when two of its sensitive hairs are touched at the same time.
5. Some algae can swim towards light.
6. Sundew leaves have sticky stalks on them which bend round a fly to enclose it and digest it.
7. Some underwater pitcher plants have a flap on the pitcher which suddenly opens when a sensitive hair is touched and a fly can be swept in by the current of water.
8. The cell contents of plants are in continual movement - often in a circular motion.
9. Some desert plants roll into a ball and blow to another place where they settle and take root again.
10. Some flowers track the sun and move round as the day progresses.
11. Some flowers close their petals at night.
12. Plants also move in time - seeds can lie dormant for many years - true "time travellers".
smoke in peace
KingKahuuna