Nothing is forever—one way or another, you’ll quit this job someday. So why not now? Frame it as a mid-career break if that helps.
That said—one income households are rare for a reason. Short-term it’s no big deal, but talk to your partner about what you’ll do if your project doesn’t become an asset. & be so, so, so careful about becoming financially dependent on your partner long term.
We believe in you. Do it for the plot!