I start the hike to Stol right in Žirovnica and go between houses and under that water facility to Završnica and further on foot.
You can find the train schedules between Jesenice and Podrožca here:
https://www.oebb.at/ You can also buy the ticket online (4 euros) and probably on the train.
On Austrian weekdays, the train at 6:37 departs from Jesenice and stops in Podrožca at 6:47.
If Jesenice isn't too far for you, you can check it live (not on the weekend); the train will be waiting on the side track, there more towards the west, i.e., Karavanke tunnel/Austria (not at the underpass).
As I wrote, you need to be a bit of a detective to discover all existing options.
