I would acknowledge the anniversary. I would not go over the top with romantic stuff at this moment. Might wait and see how things are by then. If you always eat at the same place each year, and you need to make reservations.....you could do that and always cancel if you need to. Play it by ear right now. Lots can happen in three weeks.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!
