1. Lower your voice please. Your baby sister/brother's going to sleep.
2. your loud voice startled your baby sister/brother.
3. Can you please leave him/her alone? Don't bother your sister/brother.
4. Touch him/her gently. She/he is tiny and can get hurt easily.
5. I will be back to breastfeed him/her at lunch.
6. I still have to go back to work. I will be back in the evening.