Approving Work and Asking for Changes
Leave your comments in one place, in one round, and tell us clearly when a draft is approved.
When a draft is ready you will get a notification in your portal. Open the task and leave your comments there rather than by email, so everything stays in one thread.
Gather all of your feedback into a single round. Change requests that arrive one at a time cost more time than the changes themselves.
When you are happy, say so plainly in the same thread. That is what tells us to move to the next phase.