To be used to be

1- Hello, Jim. We can buy tickets to Moscow cheaper if we will go at 6 a.m. by train.
- This is a good time for me because I am used to waking up so early.
2- How long have you been studying at university?
- I have been studying for 5 years.
- Are you tired while/of studying?
- No, I am used to studying at university.
3- Kevin you told me that you have been living in New York since you were born.
This city is very noisy and has a lot of traffic.
- But not for me Diana. I am used to living in New York.

Thank you for your corrections.
You can help me to be better.