Tiago, it does sound like you have a hectic life, one which makes getting into a writing routine a real challenge due to your variable schedule. Have you read this article I did a few years back featuring how Judd Apatow used email to break the story for Knocked Up? Some of his approach may be of help to you because he did *while* he was making another movie.

Let me know if this resonates with you and best of luck with your creative endeavors in 2019!