This might feel like another "job" for him, at this very busy time of finals. He does not need another "need" in his life.
Do an assessment of yourself. Have you developed into a whole, active, confident wom(seasonal an with many interests and talents over the last five years? If not, then use this time alone to re-define yourself. Take some classes, join a group, do something different.
Here's what he might like to see as a text:
"Hi honey. Today I volunteered with kids at the art center and baked cookies for the elderly neighbors. I am keeping busy while you study so hard."
Can you see how this shows him you are living and doing well and growing as a person while he is away?
BTW - SAD (seasonal affective disorder) is treatable. Google it and find out how you can do some things to make yourself feel better.
This thread has expired, but why not create your own?