Hi Dad
Looks like you are doing a good job on the tapering. Kudos.
Yes, the timing of cravings often does not seem to have a precise pattern. This happened to me also. I think it might occur in what seems like a random pattern after time becuase for a while after each cut, our body uses up our stores of the drug that remain in our tissues and bones to make up for the loss. When those stores get depleted, a craving will occur to try and find the mssing amount. This is what I think anyway.
Ride out the cravings and they will disappear as the body adjusts to the new dose and begins to force the brain itself to start making up missing seratonin and stuff.
Stay strong, you are doing well.
reach