Thanks!
Otherwise the loop is really extremely beautiful and definitely worth circling.
As for the required time, I'd be hard-pressed to say....hm...hm
...according to the "signs" I think it's about 14-15 hours of walking. I think that's the best guideline. I was really in the valley for lunch, but there were quite a few running bits in between.
True, this loop can be shortened arbitrarily if needed.
First, descent can be chosen already at Triglav Lakes where via Black Lake we descend over Komarča to Savica. Or via Komna to Savica. We can shorten the tour a bit if we go to the valley by gondola.
Or make a nice 2-day trip, in that case we can spice it up a bit with ascent to Vogel and Šija. Yes, lots of variants....my soles are already itching as I think about it...hehehehehehe