I'll sum up this conversation:

me: "this is how it was for me" you: "bullshit" me: "I'm sorry that this was my experience, apparently that's invalid?" you: "evidently you did it wrong, also I scraped up your writing to show you that you suck"

Like, seriously? That's how you are going to discuss this? Grow a spine, dude. Should I dig up some writing of yours as well, to show you that you can't outline properly so clearly any of your personal experiences on outlining is invalid?

If you are already having issues at this early stage, they'll be magnified by 100 by the time you get to chapter 20.

The novel is already completed. Learn how to read.

as a tiny change might cause a ripple effect in the entire manuscript.

Yes, that's the nature of all editing. Your point?