How to slow down the attack rate of a ranged mob?

Is it possible to slow down the attack speed of a ranged mob in your mod? I feel like they attack way too fast, and it makes some of my mobs way too hard. The only advice I've gotten so far (by Klemen) was "You could use timers and conditions for this" so I tried doing that with a procedure ("can use ranged item if" thing for ranged items) but it only works for players, and not the mob I'm actually trying to affect. Anyone know how to help?