Don't worry too much about the detaching, I think it is a process we work towards through the GAL and the 180s.
For me, I am nowhere near detaching, although since H and I are separated by an hour it is easier to not wonder about him all the time.
Find something to do, whether or not the motivation is there. As you said, you forget for a few hours. You will find new friends and then realize you haven't thought about sitch or W the entire time.
