I burp the jars daily until it hits 60 or so.
I jar at ~70% and will "burp" for 10 minutes 2X a day until it's ~68%
at 68% I burp once a day for 10 minutes until it's 65%
At 65% I burp once a day for maybe 10 seconds. I want a little air exchange. This assumes the room humidity is low. If it's summer and very humid, this won't work.
At 60 or 61% I stop the burping.
Thx rrog, RH in the room is 50%. At this RH level how long it take to get from 68 to 61 approximatively?