<human>: Our soon-to-be three-year-old has been having some trouble learning to sleep through the night. This is mostly because we have moved various times in the past year and have been in a lot of situations where we have had to share the bed. 

He finally has his own room, but it has not been easy getting him to sleep through the night. He had been waking up on the hour to call for us and often even running into our room. This had been especially difficult early in the morning, and we would usually cave and let him sleep with us for the next couple of hours--basically delaying all of our progress.

UNTIL...we were told about [this] little gem. it is a night-light that is either pink, blue, or yellow for the night, but you set it for a specific time and at that time in the morning it turns green. We explained to our son that the green means its OK to come into our room. If he wakes up and its dark he should go back to sleep but if the sun is out and the owl is not green, he can play in his room with toys until it turns green. 

He has gotten better and better at this over the past couple of weeks we have been using it, and finally last night we had ultimate success!! This morning on the monitor (his room is downstairs) we heard him stirring and were holding our breath for him to come up to see us, but no! We soon heard the sound of him turning his trains on. Shortly after we heard, "Yay!! It's green!" and he came bounding up to stairs to brag about how he'd sleep by himself ALL NIGHT LONG!

Thank goodness for that awesome owl!

Give me the gist of the text in a nutshell
<bot>: If you're having trouble having your toddler sleep through the night and stay in his own room until it's an appropriate time to get up [THIS] may help!