Long Distance EX GF, Should I go radio silence?

I had a relationship with ex gf for almost two years. We met twice a year with 2-3 months per each.
We broke up because of misunderstanding issue (she moved to new city, I moved to new city, I was too needy and made her feel uncomfortable)
Then, she unfriended me on Facebook.
I will move to her country by the next year(It’s not because of her, but I planned to move due to persuing a master degree)

Should I go radio silence until I move to her country? I don’t know what to talk with her anymore. We are living far. And refriending with her on Facebook with no purposal, it’s kind of weird.

Describe the misunderstanding and you being too needy.