So I’m relatively new here so please excuse any issues in the phrasing.
I’ve booked a 15 travel days within 2 months interrail pass to go around Europe from the 29th April - 10th July with a friend, this is our first big trip and I'm doing most of the organising as I like to know exactly what I'm doing at all times (occupational hazard of being a perfectionist!) Our trip is taking us in a reverse C shape starting in Belgium and winding down through Prague and Vienna. But I’ve reached a bit of an impasse though when navigating travel through and around Croatia. The plan was to go from Lake Bled, Budapest, Zagreb & Split, Sofia and then down to Athens. I understand the trainlines are under construction but I'm struggling to find any reasonable route through this area that isn't 48 hours long! Is there any way I can reroute the current countries or maybe include another stop that would make the journey easier? I’m flexible on not going to Sofia but the others are pretty important to visit. I don't mind visiting some smaller towns along the way, but being my first big trip I didn't want to make travel too challenging - if anyone has any tips or ideas it would be much appreciated!!