hey
Maybe you might want to consider being honest with your friend? You don't have to say much or reveal everything, you can just tell him something like you're going through a really tough time, and the doctor has adviced that you need some space to sort out your stuff. After all friendship is about honesty?Just a suggestion
Yeah feeling overwhelmed is quite normal
You mentioned that the TA thing is out of control. Perhaps you might want to examine specifically what are your expectations of yourself, and whether they are reasonable
We're here for you