Almost every one of my writers upon joining the Kritikme.com Ninety Day novel course tells me that plotting is their concern. They don't have that concern for very long.
The Novelry has a no nonsense approach to plotting. Stop it, and write.
My writers will find a great deal in the course that allays their concerns more gently than this, but in a nutshell that is what you need to do. You need to stop plotting and start writing. Let me explain.
Some writers do prepare an outline and some don’t. I think more writers across all genres don't prepare a detailed plot than do. It's a received idea that thriller writers must work to a plot. Yet even someone like Stephen King avoids plotting.
"I start a book ... knowing just two things: the basic situation and that the story will create its own patterns naturally and organically if I follow it fairly...and by fairly I mean never forcing characters to do things they wouldn't do in real life...For me, the first draft is all about ...