This is a horse taming question in regards to a side mission for a horse. I'll spoiler it but how much stamina do you need to getZelda's horse?
Make some Stamina potions and when you get to about half a circle left, take it. I had one or two stamina upgrades and it wasn't enough, used a couple 1/4 circle refills. Nest spoiler is how to make basic Stamina potions
Restless Cricket plus Monster parts (horn, fang, guts, etc). Add more of either side to make a bigger potion.