Hello! Don’t worry; no genuine question is silly.
If you wash your hair in the morning, and it dried throughout the day, then that is totally fine! Mildew only develops when your hair is damp for prolonged periods of time. We suggest you sleep on only 100% dry hair, because damp locks like to squish and become flat.
Blow dryers aren’t necessary, unless you get your hair wet late in the day and you won’t be able to get it fully air dried before bedtime.