Yup, I'm using pretty much everything available through pots, flasks, scrolls AP, foods, drums, engineering belt absorb.
Azerite gear optimization is probably playing for the biggest part though (I mean most bosses are doable even without some comps - so you might save your golds).
Edit:
Heroic Antorus Soloing:
- Heroic Gorothi / ilvl 373 (quite some survival involved - that's surprising).
- Heroic Hasabel / ilvl 375 (pretty tight execution here).
- Heroic Eonar / ilvl 376 (strategy and timing - I won't spoil - just think outside the box).
- Heroic Felhounds of Sargeras (very difficult one!) / ilvl 358 (insane survival, execution, and anticipation through CD management).
- Heroic Antoran High Command / ilvl 376 (pretty much a joke compared to the others / DPS is a bit tight).
Heroic Imonar looks impossible as you end up getting perma-sleep due to the sleeping canister debuff.