Why Children Sometimes Regress After a New Baby Arrives

I suspect you're right that the new baby may be part of what's going on.

Many parents expect sibling jealousy to show up immediately after a baby arrives. But often the bigger reactions come later, when the baby becomes more interactive and takes up more family attention. By six months, older siblings have had time to realize that this little person isn't just visiting—he's here to stay.

If you're seeing signs of sibling rivalry after the arrival of a new baby, you'll find more support in my Sibling Guide, including articles on preventing rivalry, helping siblings bond, and healing jealousy and resentment before they become entrenched.

Of course, development is part of the picture too. Four-year-olds are still learning to manage big feelings. Seven-year-olds are navigating their own developmental challenges. Most behavior is caused by more than one thing.

What stands out to me is that both of your older children seem to be having a hard time, and they're showing you that in different ways.

Children rarely tell us directly, "I'm struggling with all these changes." Instead, they show us.

One child may become aggressive. Another may become clingy. Another may start whining more. Another may wet the bed after years of staying dry.

When behavior suddenly changes, it's often helpful to ask "What need is my child expressing?" That's how you respond in ways that actually stop the behavior.

How to Help Your Four-Year-Old

Fill His Cup with Connection

Every child needs to know there is still a special place for them in the family. When children don't feel connected enough, they often ask for attention in ways that don't work very well.

Try to create a small period of Special Time with your son every day. Even ten minutes can make a remarkable difference. Let him choose the activity. Follow his lead. Resist the temptation to teach, correct, or direct. The goal is simply to help him feel your delight in him.

Also look for opportunities to connect throughout the day:

• "I love spending time with you."
• "Thank you for helping me."
• "I saw how gentle you were with the baby."

The more connected he feels, the less likely he is to seek connection through negative behavior.

Help Him with the Feelings Underneath the Aggression

Children hit when they are overwhelmed by feelings they don't know how to manage. That doesn't mean we permit hitting. It means we address both the behavior and the feelings underneath it.

When he hits, move in immediately:

"I see how angry you are. No hitting. Tell me in words."

Or:

"You wish your sister would leave you alone. No hurting her. Tell her, and ask me for help."

Your goal is not simply to stop the behavior. It's to help him learn what to do instead. The more often he experiences your calm support when he's upset, the more he develops the ability to regulate himself.

Aggressive behavior is almost always a signal that a child needs help with feelings they can't yet manage on their own. For more support, see my Aggression Guide, which includes articles on helping children with anger, aggression, and emotional regulation.

Give Him Healthy Ways to Work Through Big Feelings

Four-year-olds have enormous feelings. They need opportunities to move, play, laugh, cry, and express themselves.

• Run with him.
• Wrestle.
• Play superhero.
• Build forts.
• Fight dragons.
• Let him rescue stuffed animals from danger.

Children often work through difficult feelings in their play. If he repeatedly acts out stories about babies, siblings, heroes, villains, or unfairness, don't be surprised. Play is one of the ways children process emotional experience.

Often what looks like aggression is actually hurt, fear, sadness, or insecurity looking for an outlet. I've seen many boys shift out of aggressive tendencies once they felt free to cry and express deeper emotions.

Get Curious About the Urinating

Because your son already knows how to use the toilet, I would think of this behavior as communication rather than a toileting problem.

Stay calm and matter-of-fact: "Pee goes in the toilet. Let's get this cleaned up."

Avoid punishment, shame, or lectures. Then get curious.

• Is he angry?
• Seeking attention?
• Feeling displaced?
• Having trouble interrupting play?
• Looking for a sense of control?

Children often communicate through behavior when they don't yet have the words to tell us what they're feeling.

If your son is feeling displaced by the baby, what he needs most is more connection with you. If he's looking for a greater sense of control, offer him more opportunities to make age-appropriate choices throughout the day. If he's struggling to stop what he's doing when he needs to go, help him tune into his body's signals before it becomes urgent.

The goal isn't simply to stop the behavior. It's to understand the need underneath it and help your child meet that need in a healthier way. When children feel more connected and understood, behaviors like this often fade without becoming power struggles.

How to Help Your Seven-Year-Old

Your daughter's whining and bedwetting may be another version of the same story. Sometimes the child who seems to be coping best is actually working very hard to hold everything together.

I would make sure she is also getting some regular one-on-one time with you that she can count on and look forward to. Children don't need constant attention. But they do need the reassurance that they still matter deeply to us.

As for the bedwetting, because she has been dry for several years and has suddenly started having accidents, I would mention it to her pediatrician. Most cases are completely benign, but it's always wise to rule out physical causes such as constipation, urinary tract issues, or other medical concerns.

If no medical issue is found, remember that many children go through periods of nighttime wetting as they mature, especially during times of stress or transition.

Remember that bedwetting is not under a child's conscious control. Try to remain calm and reassuring. You might simply say: "Your body is still figuring this out. Lots of children go through this, and it won't last forever."

Avoid blame or embarrassment. She is likely already feeling badly about it. The more securely loved she feels, the more likely the bedwetting will stop.

Behavior Is Often a Cry for Help

The good news is that your children's behavior is giving you information.

• Your son may be telling you that he needs help with some very big feelings.
• Your daughter may be telling you that she needs reassurance that there is still a special place for her in this growing family.

When children are struggling, behavior is often a cry for help. If we can look beneath the behavior and respond to the need underneath it, children gradually regain their footing.

That's how they develop emotional intelligence.

That's how they learn self-regulation.

And that's how they come through life's inevitable changes feeling safe and secure in their relationship with us.