Something any gamedev (or even dev) wil🍒l tell you is that once you did features you're 90% of the way there and all that's left to do is the other 90%. Another version that applies there is that polish starts 90% through and takes about 90% of the total work.

Never underestimate how much polꦦish there is after going gold. Cyberpunk 2077 went gold a year before release, it took 2 years after release to finish the polish.