cannot.

Human energy is always limited. The more energy this child needs, the other child will receive less care.

Adults often think that I am equally good to both children. It is just because the other is younger, weaker and needs more care from me, so I seem to take care of him more.

But this is not the case in the eyes of older children. He will only think that you don't love him anymore.

For older children, younger siblings are the ones who take away their parents' favor and share resources with them. In his eyes, younger siblings are predators, and he is already very willing to give his parents to him.

Not bad.