long-distance relationship advice?

My boyfriend of 1 1/2 years moved away 3 months ago for a job. He says he loves me and we decided to do a long distance relationship with me possibly moving there to be with him next year. In the time he's been gone, I don't feel like I get to talk to him enough and it doesn't feel like he's in my life anymore (I was ok the first month but I feel like we talk less now). He sends me an email every couple of days and we IM once a week or so, but in the time since he left, he's only sent me maybe 25 texts and has only called me 2 or 3 times. It's always me calling him. It also makes it harder because there's an 11 hour time difference between us. We have plans to see each other over Christmas and New Years, but he won't commit to flight dates, says he's 'not a planner' (I wouldn't normally plan so far in advance, but it will be high season and neither of us can afford expensive flights). We got into an argument over the phone the other day when I told him I wished he wouldn't treat making plans to see me like a chore. He said it was a chore for him and I ended up hanging up on him. I haven't talked with him or heard from him in a couple of days now. I don't feel like he's putting any effort in and am starting to think about breaking it off. Obviously you don't know all the details of our relationship, but any opinions or suggestions?