I am thinking that aerobically prepared tea is maybe not for you if you want to keep it 6 months. The best way to make stabilised compost tea is to use stabilised compost, prepare the tea and get it straight out ASAP, which is not what you want. This would be compost that is well matured and cured being free of the phytotoxins present in unfinished compost. I can supply you with references if you want to read on phytotoxins further.
Aerobic microorganisms tend to function in very extreme conditions, when the oxygen is switched survival reactions will kick in, so there will be survivors but I cannot recommend it. If you are keeping it for a while the IMO tea method (Indigenous Microorganisms Tea) would be more appropriate.
i don't think you can have an active aerobic bacterial mix that will be "shelf-stable", like you're wanting. aerobic - they need to breath. per KNF, you'd store the IMO in a dry state, or put into hibernation with sugar. make your tea just before application. LAB (lactobacillus prep) can be stored for weeks, or months if in the fridge. LAB is not a fertilizer. there are protocol to make this prep. it is extremely useful as a compost accelerant and odor control for animal bedding. some people drink it as a probiotic. if you make it right, it tastes pretty good, if you like fermented foods. i digress.
Korean Natural Farming has lots of preps that will be kind of like what you want, but a ready-to-go active bacterial tea that is shelf stable is not one of them.
https://naturalfarminghawaii.net/ chock full of info, my friend's website. we joke that his beard must be so full of IMO, he could walk through a field and spread the good guys just by smiling.