Checked your lodestone, your HP is so-so. Probably can do 4 stacks during Fireball, if 3 stacks RNG will kill you for sure unless you have time to Stoneskin yourself in every fireball, then okay. But I recommend atleast 4.4k HP with partymates and foods just to be sure.

Once you hit those basic requirement,

You can start off by practicing to time Stoneskin during Death Sentence and pre-casting Medica during Fireball.

Dodge Divebombs, and Twisters. That's all there is to it really.