from my experience, the longer you take benzos, the stronger is the withdrawal. sure, dosing also plays an important role, but it's the neuronal adaptations which happen over time that cause withdrawal symptoms along with seizures. example: been doing large doses of clonazolam, a rc benzo 10x stronger than clonazepam. taking it for a week and stopping resulted in no symptoms, except time teleportation. taking the same thing, same doses for three weeks, resulted in withdrawals complete with grand mal seizure. used valium to not die. this is why tapering shouldn't be too long, but can't be too quick either. basically, the only way to be safe with benzos: 1. take only pharmacy benzos. these won't cause withdrawals as quickly as rc benzos. 2. take them not longer than 4 weeks at absolute maximum.  3. always taper down. the shorter you take benzos, the shorter taper you require in order to avoid withdrawal. 4. keep long-acting benzo like valium at hand. i can't stress this enough, as withdrawal symptoms from benzos like clonazepam can hit fully after 4-5 days since stopping and you'll wish to be dead if you don't have even a single valium handy, which should be enough to get the edge off. everyone that takes benzos for longer than that, should consult the ashton protocol. long-term benzo use means your body now is literally dependent on benzodiazepines to function at all, suddenly stopping is immediately dangerous to life and can lead to significant brain damage, as neurons begin to fire chaotically all the time.
Poland