I always enjoy reading that iTunes connect is ordering me to "prepare for submission". It's kinda *****.
Prepare for Submission
Not accustomed to being told to submit, I take it.
Yes, it's hard, but don't worry, the more you commit, the more you'll like it. Just don't question your role or ignore compliance as rejection never gets easier. Keep the final release in mind and all of your sacrifices will pay off in the end.