These are very annoying to tame. The method i found best is to have a few sleeping bags placed nearby to start. Use ascendant cloth bps to craft like 10 sets of 3 different pieces for some armor. Carry a stack or two of med brews and a decent shield. Put on your cloth armor and agro it. If it breaks your armor put on some new pieces so you take less damage. Once you have 3 stacks of the spit debuff let it swallow you. While in it's mouth drop 1 or 2 pieces of the ascendant cloth, the broken pieces will work too. The mini games are pretty easy, just fly around and collect the desired material 3 times. You will have to repeat this process a few times in order to tame high levels. Good luck have fun