I received a prescription for a nasal spray. When is it better to use it, in the morning or evening?

I keep coughing and went to a respiratory specialist, who said it might be asthma and recommended tests. Fortunately, it's not asthma, but I was prescribed different medications from the gastroenterology department. They said the cough is caused by reflux esophagitis and rhinitis, not asthma. I was prescribed nasal spray for the first time. They told me to use it once a day, but I don't know whether it's better to do it in the morning or in the evening. When do people who use nasal spray typically use it?

Morning or evening