2 in each jar might be a good idea.
What I did was "invest" $30 into a quality hygrometer with 1% accuracy, and I switch it between jars as I am winding down my drying and moving into curing. It is a bit of work to check RH and switch it to other jars a few times per day, but slowly I dial down the humidity in all the jars till they hold 62% or less for a full 24 hours. Then I check them every couple days just to make sure. Once I get them all in the zone. I cap them and put them away for a month.
I'd love to have 5 or 6 of the ones I have. Maybe over time I will accumulate them. I will likely buy at least one more before my next harvest.