Can I use nasal aspirator when the baby is sleeping

A. hello, yes you can. you can also clean nose by nasal drops, Put two to three drops of saline water into the baby’s nose with a dropper. Wait for 30 to 60 seconds. Turn around the baby onto his stomach to let the nose drain. Collect mucus on a tissue. Gently wipe around the nostrils without putting the tissue deep into the baby’s nose. Clean the dropper after every use.