I'm not going to interact with my mother in a year
How do you plan on not interacting with your mother?
I'm going to change my phone number and I'm not going to use it that year.
Families are often expected to at least talk to each other somewhat often. You're going to break your mother's heart doing this.
It is not about upsetting her, I just have lots of plans for the year. I'm going to lose weight and cut off all social relating and get major academic funding. I'm going to pass the world with hard work and make my father proud. It's simple.
Its good to work on improving yourself, but not at the expense of your family. Would you want someone there to celebrate those successes alongside you?