If you have reached age 59½ and also 5 years have elapsed since the beginning of the year for which your first Roth IRA conversion is deposited, the distribution will be qualified distributions free of any tax or penalty. The timing of subsequent Roth conversions will have no effect on the 5-year qualification clock.
Regarding 5-year conversion clocks, these are only used to determine if a distribution of a converted amount is subject to a recapture of the 10% early-distribution penalty, and distributions after age 59½ are not subject to that penalty. 5-year conversion clocks become meaningless upon reaching age 59½.
