I'm on a low carb plan, and those have a well deserved reputation for appetite supression. I track my food in fitday out of habit and curiosity, since I'm not counting calories. I have a list of foods I am allowed to have, but no limits on how much of each (with a couple of exceptions). Since I started almost 3 weeks ago, I have been averaging aorund 1000 calories day but that's with eating as much as I want.
So depending on what you are eating, it's possible that you may truly just not be hungry. And while it's a change from what you are used to, you shouldn't try to ignore that sensation, any more than youl would want to ignore it if you were hungry (esp. when trying to do intuitive eating).
and fwiw, I also do have a tendency to eat out of tiredness, like my body just needs that extra energy to make up for the lack of sleep. So I definitely think that if you are consistently getting better sleep now, that is very likely a part of all of this - and it should also help you lose weight, not just from eating less, but because a lot of your metabolic activity needs sleep to happen most efficiently.
as for what to do with your extra time, become an exercise junkie instead!