Help my relationship before it crumbles!

So I'm 19 and my SO is 18 and i just recently got a job as a teacher so I will be working all mornings and days, we're open 6:30-6:30 but my boyfriend is a manager at a restaurant and always closes. We both always have Sunday's off and I have Saturday's off and he gets one extra random day off a week, neither of us can use our phones during our work hours so this makes it very hard for us to communicate at all anymore. I suggested we move in together but he's not all for it. I think the more he thinks on it the more it's growing on him but I don't think it will happen anytime in the next year or so.
The issue is that I suffer from depression and get very sad and depressed almost if I go a long time without seeing/talking to my SO so our new work schedules cause a major conflict for us. I guess what I'm asking is does anyone have any advice on how I could convince him that we should move in together or and advice in general. We both love each other very much and don't want this relationship to end. Btw we've been together for about 3 years