Sibling jealousy does not mean a child is bad or that a parent must measure love like a calculation. What matters is not letting daily comparison become the language of the home.
What to focus on
Listen to each child separately when possible, then describe what you saw without a label: “It sounds like you wanted a longer turn.” Do not say who is more cooperative or mature. Then choose one practical step: a new turn, personal space, or a short separate activity.
A practical family step
Set aside ten minutes in one week for an activity each child chooses in turn. The aim is not material compensation; it is a relationship moment without competition.
When to seek extra support
If a situation involves risk to a child or others, or persistent distress the family cannot manage, speaking with a qualified professional can be an appropriate next step.