Choose the largest Boveda that fits in your humidor. You can never use “too much” Boveda.
Use more Boveda than the minimum recommended. Think about upping the number of Boveda you use in your humidor if it’s in an extreme climate (desert-dry or rainforest-like) or when it’s exposed to seasonal humidity swings
Close your humidor or humidor bag once you remove your cigars. The more you expose Boveda to air, the harder it has to work and the shorter it lasts.