Dank, keep it in your closet, with the lid on it. Is that soil good and moist? If so, you're good. Most water loss in soil storage is from evaporation. Did you mix your trimming and stems and green material your done with back into the soil? If you did (GOOD JOB) then the moisture in the plant material will help keep it moist as well. Not to say after a month maybe open it and give the top a bit of water if its looking dry.
Feed that soil biology mate. They did you right and got the nutrients to your plants to make a good harvest, now make sure you feed them. Dont be that asshole and not feed your soil. And dont just throw shit and nutrients on top, they want that sweet sweet green living plant matter. LOL. (im stoned and found this very funny no offense intended)
I help my bro in law with his apt grow. he used to swap 2 55 gallon totes in his 3x5 tent. one tote in the tent one in the closet. one in the closet sits for 90 days while he grows in the other one. Once he harvests he puts all trim, a scoop of amendments, mixes it into the soil. Makes sure its properly moist, throws lid on it and hes good. Pretty easy system.
When it comes to worms in soil i have always been of the opinion that at minimum get some European Nightcrawlers. They are bigger cousin to red wigglers. The bonus to this species is that they are a mid range dweller good at both composting and preventing soil compactaion. They are also very active (shit a lot) and reproduce well. In my time working with soil and organic principals I have found that adding some Euro crawlers to my soil is necessary for a active soil food web. Mulching with clover reduces my need for putting casting on as a top dressing constantly, eliminating my need for a worm bin.