How can I help relieve my daughters cough!?

Ashley🦋 • [Married]💍[Mommy] 👨‍👩‍👧‍👧 #girlmom [🇺🇲❤🇳🇮]

My daughter (who is 2) unfortunately caught a cold and now, when she lays down for her nap or bedtime, she starts coughing on and off for at least 20/30 minutes. I put kids vicks vapor rub but that doesn't seem to be helping. Any other remedies I can try?

Thank you. 💜