Yes, I imagine is it very hard. Please give yourself some time to adjust. No one expects you to be someone else just because you are somewhere else. It sounds like you have lots of people rooting for you, people who know you.
College is not high school ....everyone reading this is saying AMEN! It is so much better. It really is true.
Take one day at a time, that is your baby step. Try to be present where you are, without the electronic crutches, at least for a little while every day.
Please keep us updated, I only wish you the very best as you take this great step...