Awake windows have become the go-to for following an easy routine. It's not a by-the-clock schedule because it doesn't follow the clock but rather time, making it easier to know when your baby will sleep next.
 
This easy-to-read guide explains what awake windows are and how to use them. It gives you an average awake window per age and it also contains a printable cheat-sheet to stick to your fridge so you can always have it handy.