Why not try a different kind of quiet time? I have three kids 10, 4, and 3. When my middle child quit napping, I would put my youngest down, read to him for 20 minutes just enough time to make sure she fell asleep, and then would let him pick out a movie. I'd give him his sippy cup of milk, a snack, his blanket, and let him watch the movie while I got some work done or got some time to myself. Sometimes he would come to see what I was doing or ask for something more, but for the most part, I got a nice long break. None of my kids took naps after they turned two. It was like a light bulb flipped on. They just stopped needing one. Bed time is 9pm every night, and they wake up between 8 and 830 every morning. My oldest is the only one who wakes up earlier, 715, and he goes down stairs and watches cartoons until he knows it is time to get ready for school. He gets himself dressed, his own lunch made, and watches the clock himself to make sure he is at his bus stop on time. He will be 11 next month. I am sometimes awake before he goes, but even if I am he is responsible to still do all those things. Of course he has missed the bus and I have driven him to school when needed, but it is so good for him to learn these things now and not be dependent on others. Sorry off track a little. I would also give him a chance to fall back to sleep on his own if she wakes him up. If he is tired it should not take long him long to fall back asleep on his own. It is something they have to learn how to do anyway. If we always help them fall asleep they will not learn how to do it on their own. Of course at 4 months you do not just want to let the cry, but let him for a couple minutes, then quietly walk in and comfort him and then walk back out and see if he then goes to sleep pn his own.