Everyone has trouble remembering lyrics. My tips are simple...... practice. The more you sing a song the easier it is to remember. I break songs into pieces and work on it piece at a time. Keywords can help. EG In your song I would remember the keyword for each verse as 1-night 2dreamland 3chorus/middle eight 4morn. Think Of it as a story. You go to bed at NIGHT then you DREAM ....ETC. All songs can be remebered this way.