Long distance relationships..

Hey guys.. So I'm engaged so an amazing man.. Problem? He lives out of state 600 miles away from me for the time being until we can both get on our feet and start a life together. (We are both in college and work part time) we see each other about every 2 months. He comes to me and buys a plane ticket and a hotel for about a week, and I do vice versa when I visit him. So visiting him costs me about $300 per visit, which is pretty good actually. But now my job will not allow me to take time off to visit him. I'm not sure what to do, I definatly can't quit my job, but it's kind of imperative to our relationship to see him every now and then until we can be married and live together. What should I do?