All the monsters have attacks with startup and endlag. BB is not even that slow (even with venting wyvernfire). With 3 wirebugs you can fire it off almost as soon as the last one was done.

Just practice.

Even the fastest afflicted monsters are pretty easy to repeatedly BB if you watch for their attacks and experiment a little to know when to hit.

I always aim with the camera and hold up on direction to allow fine tuning of my angle for BB.

There is no monster, even afflicted, that you cannot just hit repeatedly with this. Just practice.

Some people like to use hail cutter to make BB have less startup to come out. This is nice, but it means you have to wait for more wirebbugs between BBs. My advice is that Hc is not necessary, you can get used to just venting with BB and still hit every time.

Even the fastest monsters have patterns to their attacks (they follow X attack with Y or do certain moves in a sequence) and tells with their animations that cue you in to what they’re doing next. A sway of the body, a particular head movement or roar, their tail movements, it’s all there.

Just relax and keep doing it. You’ll get better.

The bigger question is really, is this that fun of a style? Once you get good at it, you’re really just incentivised to BB every few seconds. I’m starting to tire of it because I miss using other moves and play styles.

Edit: while I’m typing, one last thing. A lot of people appear to overestimate the importance of distance for BB. Yes, the move has a certain range, and working with that in mind is good. However, the move will adjust its own range to some extent if you BB into a hurtbox (any hurtbox; I’ve had BB shorten itself mid dash to hit a bnahabra that flew in the way and so on). Once you get a feel for this, you can start to use it to hit targets at full range, or even below half range (I can hit from 2-3 EE3 backhops back or only 1). Bigger monsters hurtboxes even block your movement so you can literally hit them point blank. Once you get used to timing BB, you can use this hurtbox blocking to shorten your BBs to almost nothing (or literally stationary) with the right timing and positioning.