Do not pause between shots instead shoot the required amount of arrows/darts and wait for it to drop. Make sure you have plenty of narcotics as the torpor on these creatures will drop in the blink of an eye. Can be tamed solo but only with kibble due to the torpor time and can also be carried by a Quetzal if you prefer a taming pen.
Just a few tips: 1: Make sure to when taming bring lots of narcotics. They have high torpor but drain super fast. 2: If you can definitely use some sort of flyer or cryopod that can carry this because it is super slow. 3: Works as an air conditioner and gets better temperatures by upgrading melee.