I think this is a little bit of a catch 22. I agree with you in that I would not wear an award until I had orders for the award. AR 670-1 provides some guidance on this issue. It states Commanders may require the war of awards but again I believe they are referring to authorized awards.
You might consider voicing your concern with your chain of command. If they tell you to wear your awards simply make a note in a memorandum for record that states on this date at this time I was told to wear the following awards and include the individuals that were present at the meeting. If you are called out on wearing the medals you have a fall back position.