힘내세요! I get you my Korean Friend. I am born here in the US but my first language is Korean resulting from my parents who are both Korean immigrants. Being a first generation Korean isn't easy. English is my second language and I have been speaking it my whole life and I still feel like home when I am speaking Korean. It is who I am. But, man let me tell you growing up wasn't easy. I too believe you will find English to be more comfortable one day. All I can tell you friend is to speak it as much as possible and remember inner dialog helps! I translate English to Korean in my head and it helps me process it faster strange enough.
Also, your dedication as a father is truly inspiring! You will be a great father and I welcome you all to the States. Remember you are not alone and we are all here ready to support each other! 😄