Both of you macam still in high school. LDR requires communication. From the sound of it, you guys are not meeting at the middle ground. She seems like need to talk to you for 2-3 hours straight while you only wanna talk to her for 2-3 days once. Either way it's not gonna work. I would suggest keeping the communication constant but can be more sparse. She has to adjust to not getting constant attention while you have to figure out what's priority to you to squeeze that few minutes t oreply every now and then. You can play phone for 1 to 2hours but cannot reply her, this shows as much though.

Hope things are better now. Else I cannot see how you guys are going to survive each other. Especially when yoiu enter your 40s and 50s.