After he sees his favorite world-famous musician at a concert, a failed writer meets her in his dreams, but he only has 6 hours before he wakes up to earn a kiss from her and convince her of him.

Love this angle, Odie. Thanks so much! Sorry for the late reply. I didn't see this notification before. I hope you're doing well, mate!

With the focus on love, consider the following:
“A lovesick fanboy has six dream hours to earn a kiss from a world-famous singer in order to win her heart.”

Make this yours, brother. Take care!