Hello @amymya... Really informative article.
I have been doing this process for a year now! I started with a sachet with powdered kefir which needed to be reconstituted and so on... I found that lasted for about 2 weeks really well.
Then a friend gave me the real thing... and have had so much that I've started composting / giving it to the hens and offering to friends (it is a real commitment)...