exactly this^
I have heard of people farming the same thing in the same way for months and than suddenly getting bans, thats due to farm/accounts being profiled.
Jagex adepts to bots ot get rid of them, so you have to adept your farmt o it aswell.
Mix up levelling order, different strategies, different locations, ...
It involves testing and it will teach you a lot of what works and what doesn'y ^^