Moving Away To College..need Help On Keeping A (long Distance) Relationship?

I’m moving away to college in late august which is about 70 miles from where I currently live. My girlfriend will still be living in my old town. I’m 18 and and shes 17 so well both still be in schooling. I’ll be coming back home around twice a month for the weekend. So I was just asking for Advice to keep the relationship going. Personal experience, tips are welcome any advice really
Thanks