Some can do this in short stints. We can lose track of time whether it’s 15 minutes or 5 hours. But for me, it takes time to get into the creative trance where the dance takes place. And once I’m there, I hate to leave it.
I find even when I’m in my morning meditation/prayer time, the time I spend envisioning the life I want to create, I do my best “work” when I can take my time. Both creating a life and creating a work of art are time spent with the creative power itself. Time does seem to slow down. You can’t rush a birth. And that’s what we are doing whether it’s a book or a painting or a life, we are giving birth to ourselves.
So take the time to become one with the creative work. The key is to “be” come. Let go of the doing and be the work so you can be the expression you create. You are life becoming life.