I don't use nutrient for most beer yeasts. When I use kveik it's important to add enough for a quick ferment. I used to not add it and my ferments would take an awfully long time (the beer is still a good beer though, just a long ferment). I've never added to cider, both turbo and normal, and noticed the ferments took a really long time. I just read Craft Cider Making by Andrew Lea who says nutrient is needed to ferment cider, which is probably why my ferments took so long.
With kveik I also use bread yeast 10 mins before the end of the boil. Works really well and will try it with my next cider batch.