You're trying to do too much but moving too slow. You're asking for permission instead of just doing things. You wrote up a huge document? This is a startup

You're trying to do too much but moving too slow. You're asking for permission instead of just doing things. You wrote up a huge document? This is a startup not an enterprise! What's the worst thing that can happen? prod breaks right? Make sure it's being backed up! Teach them to tag the branches before merging into master, at least they can have a reference to rollback. Make sure rollback on master can happen with one command. Build the stage without permission, make it a CI/CD. Show them, taadaah! When you push, you can go test on stage, see? huge documents, calendars? meetings? this is a fast growing startup, all your ideas are great but you are executing it too slow and slowing everyone else down that's why the push back is happening.