My partner got a temporary work assignment abroad for 6 months. We have been together for 3 years and live together. They leave in 3 weeks. We have talked about it and both want to try long distance, but I have seen many couples fail at this. We would be 7 hours apart with limited ability to visit (maybe once every 6-8 weeks). I am unsure if it is realistic.
Six months is absolutely doable if you are both committed. The key is structure: set a regular call schedule, plan visits in advance (even if far apart), and agree on what "checking in" looks like for both of you. The worst thing you can do is leave it vague. Also, agree in advance on what happens if one of you struggles — have that conversation before they leave, not during.
Experiencia propia
Done long distance twice. The ones that worked had clear rules. The one that failed had none.
Three years together is a strong foundation. Six months with a clear end date is manageable. I would commit fully rather than take a break — "taking a break" rarely preserves a relationship, it usually ends it slowly.