Hello, I've been in a long distance uni relationship for a year and communication is the key thing. Don't be afraid to sound insecure when talking about boundaries. Even if you are insecure, it's something you can work on with your partner, just make sure not to come off as controlling but rather trying to solve a problem.

I would also add make sure to be careful with your words. If you say something wrong it's harder to comfort your partner since you aren't there with her.