We usually let him out when he's awake and we're in and we just open the door on his cage so he goes in and out as he pleases. I've been very impressed because he's been going back in all by himself and going to sleep when he's had enough.
That's the beauty of have just one or two.
I have one I keep up stairs that is the same way. After supper I open his cage and his does as he pleases until I go down to do the rest.
He cases the cat, chews on the fire place brick,runs all over our feet chewing on laces, but never touches a wire. Some are not that way, rather most are not.
I have even noticed he hardly drops a dropping when out.
Yes just keep on eye he'll let you know when things are not right, or upsetting. All you have to do is listen.