So I've been trying to say that a friend has lived in America for about 9 months, and is still currently living in America.
Would it be: アメリカで9月間ぐらいに住んでいます。
I'm not sure if I'm using the correct form of 住む, but I don't think it would be 住んでいました since it is still currently taking place.
How to say "I've been living in America for 9 months?
and then adapt the answer as necessary?