Should my girlfriend (18f) and I (18m) break up?

To provide some additional context, we have been together for nearly four years, although we took a six-month break last year before reconnecting. She is my first girlfriend, and I've never been in a relationship with anyone else. I still have strong feelings for her, and she means the world to me. That said, I have been contemplating the idea of breaking up constantly lately. She is currently enrolled in university, pursuing a medical degree that will take about 12 years to complete, while I am taking a gap year to figure things out and working at a restaurant. Given our schedules—her classes run from 8 AM to 4 PM, and my work hours are from 3 PM to 11 PM—we rarely have the chance to communicate. This situation is likely to persist or even worsen as time goes on. As it stands, we barely talk, maybe once or twice a day, and I often find myself forgetting that we haven't spoken much. I feel like we’re drifting apart. Should I stay in the relationship, or would it be better to part ways? I would appreciate any advice. (Apologies for any grammatical errors; English is not my first language.)