Baby Pastel Guide
What Should We Do? The Firstborn's Regression Behavior After a Sibling Arrives
After a sibling arrives, the firstborn may suddenly exhibit baby-like behaviors, such as searching for a bottle or throwing tantrums. Baby Pastel introduces the causes of regression behavior and the right ways for parents to wisely cope with it. Discover personalized parenting solutions that restore the firstborn's self-esteem with love and attention.
Last updated June 25, 2026
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