
It's an analogy that means provoking unnecessary trouble by interfering with something that was stable, just like waking a peacefully sleeping child and making them cry.

Don't be lazy and try to wake people up while you stay in bed. If you want to have people work, it's not enough to just give orders; you need to take the lead and work yourself.

Children who sleep well are healthy and grow up strong.

Pretending to be docile while hiding one's true nature.