I’m in a quite similar situation. Been talking to this guy since December and we just have a really dynamic conversation, and we made it exclusive in January. Things are good, we connect really well, got a really good physical connection but we’re both really busy and establishing our careers, so it makes texting difficult – but not impossible. And it’s just so hard when sometimes he takes 2-3 days before replying when I can see he was online a few times in a day. But we both admitted that we really like each other and are on the same page. A week ago he had to leave for another country for a 4-month training program, and before he left he assured me again that we are on the same page and we will carry on with what we have. He messaged me the day after he arrived and never did again – it’s been 4 days and I saw him go online every single day (multiple times). I know work can be hard and tiring but this just makes me anxious because my ex used to do silent treatment on me, I know he is not purposely doing this but taking this much time to reply is just a little too much for me.