well a bit more info about my run.

It was my first attempt and killed it first go.
I used 5 dps, each rift had only 1 spawn of ads because the rift lord was being killed so quickly.
I tried to drink after each kill even if it was only 5 seconds its very critical to drink + mount.
I didnt use a single dragon becon.
I had one death and that was at 15% of the last dragon boss, got hit by a sandbreath its a bit hard to get earth elementals to tank them so that they dont face you lol.
Medivah finished at 88%.