When my T went on leave for several months, I decided to write her a "book" while she was away. I didn't at that time but having a project related to T for the period when you are not at T, just make it all part of an experiment, a special practicum course where you see how well you're doing, what you need further help with, what you have learned, etc. and document it to give her when you all start seeing one another again?