I think this is a very personal decision based on the maturity of the relationship and your communication styles. I have been in a long distance relationship for 2.5 yrs (friends for 2 yrs before that - also long distance, after the first couple months).
We rarely ever schedule a time to talk! The only instances I can think of were:
- One of us was traveling, so we had a different schedule and possibly different time zones to work around
- We had something serious to discuss: scheduling gave us time to mentally prepare, and underscored the seriousness of the topic
- We hadn't talked lately because one or both of us was abnormally busy; one of us would say "hey, when are you free to video chat this week?"
Otherwise, we typically text and IM throughout the day and video chat a few times a week. It's not constant, and (for texts) often asynchronous.
It works well because:
- We both know each other's schedules and have set our expectations accordingly
At my old job I could have IM up and chat during the day, but I can't at my current job. It took some adjusting, but we learned when the other is usually available and got used to having hours between texts. It also helps that we're both very computer-oriented people, so there is a lot of overlap when we are both online.
(This in contrast with an ex-boyfriend, also long-distance, who once sent me a barrage of texts asking why I was ignoring him, while I was in class..)
- We trust each other
Very important! Trust will grow with time, but you have to have a good foundation now to even consider it.
My boyfriend can be a bit light on details, and I do get a little sad or annoyed when he disappears for an evening without notice - but I know him well enough to think "oh, it's Friday, I bet he's playing board games and forgot to tell me".
You also need freedom to make new friends and live your life, without having to check in constantly with your girlfriend or reassure her that you're not secretly falling for your term project partner. (Another thing my ex-boyfriend did.. did I mention he was an ex?!)
- We found a way to "hang out" remotely
We like to watch movies together online and play video games (Minecraft, so it's more like a joint creative project than other types). This will depend on your interests, but try to find something that you can do together remotely.
Another option is to have video chat up while you work on your own things. We do this occasionally too - that way we don't resent the other for taking up so much time when we need to get stuff done, but we still get to see and hear each other.
You mention you have been dating a month and friends for 8 months before that. So while you're probably still learning, you have some usual form of communication now. How often do you phone now? Is one of you more communicative than the other? This will help inform your "policy".
It's a great idea to discuss this before you move. Ask her what she would like from you in terms of communication - texts? phone calls? handwritten letters? Have you discussed the idea of scheduling with her? Perhaps she has strong feelings one way or another. Some people like the sense of ritual in getting a call every Sunday at 8pm, or are too scatterbrained to ever call unless their phone reminds them. Others don't want to commit to the same block of time every week, or would rather talk about life as it happens instead of saving it for a week at a time.
Once you move, whatever you agree on, try it for a month or so and then check back in. Does she want you to call more? Do you want her to text more? You'll soon get a sense of what works and what doesn't and can adjust from there.