When it’s very low humidity, I hang the plants and then put a “curtain” of plastic around them.
A large garbage bag works as long as there is some air flow.
Instead of directly into jars, I use plastic tubs with a large slot cut in the lid.
Using a hygrometer, I open it close the slot with tape to keep the humidity steadily dropping.
The buds will handle RH of up to 98 as long as there is air exchange.
The whole idea of burping jars is to give fresh air and lose moisture, but rather than start and stop, a slot allows a steady process.
I try to never let the buds get crispy dry on the surface, yet keep a slow steady evaporation happening.
If you are in a zero RH environment, you can seal them off and keep the micro environment where you need it. Just be sure that no moisture ever forms inside the bag or you’ll get nasty things growing.