Long Distance// need advice

I’ve been with my boyfriend for almost a year now. I love him so much and I honestly don’t know what I would do without him. We are so close and tell each other everything and we’ve never been in a single argument. I am 18 and he’s almost 20. I’m going off to college soon and he and I will be 4 hours apart. I know that isn’t such a huge distance but I am so afraid for what’s going to happen. He plans to visit me every other weekend or every 2 weeks on the weekend. I will come up occasionally to visit as well. We see a future together with each other. I want us to work out. Any advice for long distance relationship?