"One's sleep patterns" refers to the specific routines and habits an individual follows when it comes to their sleep, including the times they go to bed, wake up, and the quality and duration of their sleep. Full definition
A change in sleeping patterns in which your child is often awake all hours of the night and sleeping throughout the day. (caringtherapistsofbroward.com)
I guess I can't complain about the inconsistencies we go through with sleeping patterns of our 9 month old. (babycenter.com)
That's when baby sleep patterns change and getting baby to settle becomes much harder. (mommystroller.com)