https://yanghu.github.io/tags/newborn/Recent content in Newborn on Yang's NotesHugo -- gohugo.ioen-usyang@yhu.me (Yang Hu)yang@yhu.me (Yang Hu)© 2026 Yang HuThu, 16 May 2024 21:44:33 -0700https://yanghu.github.io/posts/parenting/sleep-training-baby/Thu, 16 May 2024 21:44:33 -0700yang@yhu.me (Yang Hu)https://yanghu.github.io/posts/parenting/sleep-training-baby/<h2 class="relative group">Four Month Sleep Regression <div id="four-month-sleep-regression" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#four-month-sleep-regression" aria-label="Anchor">#</a> </span> </h2> <p>New sleep cycle with 5 different stages</p> <ul> <li>REM: Dreaming sleep</li> <li>Stage 1: very light/drowsy sleep</li> <li>Stage 2: Light sleep</li> <li>Stage 3/4: Deep restorative sleep</li> </ul> <p>Light sleep almost every hour or two throughout the night. They need to learn how to go back to sleep after the light/wake stage.</p> <p>The 7-step guide</p> <ol> <li>Fill the tank</li> <li>Check the engine</li> <li>Set the cruise control</li> <li>Top off the tank</li> <li>Hit the brakes</li> <li>Plan your rest stops</li> <li>Unload the baggage</li> </ol> <h2 class="relative group">1. Fill the tank <div id="1-fill-the-tank" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#1-fill-the-tank" aria-label="Anchor">#</a> </span> </h2> <blockquote><p>Maintaining adequate feedings during the day.</p>