If your current T is unsupportive, then perhaps you need to find a new T. Trying to use your professor as a T does not sound like a good idea. If you really do need more support, I recommend looking into a new or an additional T. Even just informing your professor of your personal business sounds a bit unprofessional. I realize that being a psychology professor is a bit different than being a professor in my field, but it is generally considered over sharing (and kind of child-like) when students tell us a lot of details about their personal lives. If a student is sharing their struggles in order to get extensions on assignments, we are trained to refer them to disability services (because MI sometimes qualifies for those services). If they are sharing in order to get emotional support or sympathy, we refer them to on-campus therapy services (we have that at my U). We are strongly discouraged from acting as a friend/mom/T to our students. It can also become unfair if we give breaks on assignments/expectations to students who talk to us about their struggles, when there are also so many struggling students who chose to keep that information private. its not that we don't care or don't want to be supportive, but rather that we want to train students to be emerging adults who can utilize the resources available to get the help they need while still being professional in the classroom/workplace.