As I posted you don't need to soak longer than 15min. it doesn't get any more "wet" over time.
Dry should be completely dry. Rake it, turn it, stir it, what ever you need to do to speed up the drying. Each cycle AFTER the 1st, all you need to do is wet the dirt, you don't need to soak a 2nd time.
The initially soaking does two things, it will float out wood, leaves, plant matter etc. it will also allow rocks to separate from the dirt. Any thing floating after 15min in you bucket will float in your tank, pour the floating mater out, then dry your dirt in the Sun.
The more cycles you rum the more effective the mineralization is. My last back was 7-9 cycles as the rain added a few extra cycles. I spend a month aging it.
2-3 cycles will work fine.