Girls, please help me with advice, my little one (3 weeks old) has a s…

Girls, please help me with advice, my little one (3 weeks old) has a stuffy nose. It's not a cold, allergy, etc. I read that it could be due to dry air (I put damp towels on at night, but it doesn't help). I don't know what to do so that the nose opens up, and there is also no snot. Maybe someone had this too?