Instead of repetition I would prefer written information organized well by priority. You don't have to repeat if I can revisit the information, easily find it when I need it, if I was to forget it. And with text I am happy also with overcommunicating as long as it is done once, not frequently to break my flow. When you ask me to do something always mention priority and the expected due time, do I have to drop other things or no. If you have a question, tell me by when do you need the answer.