Hey flowbot! Not my genre I'm afraid so I cant co-write with you.
My suggestion is to try to find the heart of the song and build out from there rather than just tack lines on.
What's the message here? What is it about? Is there a key phrase that you can hang your hat on? Or a specific emotion you're looking for? Brainstorm around those and try to generate some lines (any order just keep churning them out) then see if any look like they hang together.