Elden Ring: RL1 / Incantations only - Malenia, Blade of Miquella

Using Burn O Flame is more technical than it may seem at first glance. I had to do a lot of trial and error to figure out. You basically want Malenia idle, sort of pacing left and right, take a step in, and cast.
It makes sense to take some risks in the first phase, in order to have some time left in the physick in the second phase. But you basically cannot take any risks in phase two. Chain casting Burn O Flame is basically a guaranteed kick or waterfowl. I tried using Catch Flame in phase two, but it's really miserable due to its short range.
Run rules: RL1, Incantations only.