I'm going on 20.8. to Triglav with 13-year-old son. I thought to go from Krma to Kredarica, overnight there, morning to Triglav and then to hut at seven lakes, overnight there and morning over Komna down to Savica waterfall. I've done this tour alone before and think it's nice, just a bit worried about weather. For son would have helmet too, interested how it is with belaying or roping with me, is it necessary, son otherwise good hiker and quite nimble with climbing.