Hey just wanted to leave this here as this was something that helped me/that I found useful.
I slightly adjusted the Behemoth Macro by adding 2 lines:
/echo <targethpp>
/target <1>
/targetlastenemy
by switching target away from behemoth and then back, you immediately stop auto attacking, so you don't have to worry about accidentally doing 1 AA too many or fat-fingering a different ability like Overheat while trying to sheathe your weapon. (i'm definitely not talking from experience here T_T).
I hope this might help someone ^^'