I don't want to sound like the devil's advocate here (I am still grinding for the mount as well) but I feel like there are way harder (as in more grindy) mounts to get in game, like the Triceratops/Centurio Tiger from Hunts or the Astrope you get by doing 2000 mentor roulettes.

The patch came out 2 weeks ago and we still have 5 months left until Endwalker comes out. Just take it easy, do a couple Dalriada/Castrum runs a day and you'll have your mounts in a couple months at most.