Crying Baby... when we leaves

For the first time, Yishion cry when mummy and daddy leaves the house to work. In previous, we will say BYE BYE and he will show the BYE BYE hand sign.
Now, our heart are quite sour and pain to leave him at home. But SORRY boy boy, mummy and daddy need to earn for living..... that's the only comfort word we can think.....