In the case of any Tier 6 member retiring for service prior to age 63 but no earlier than age 55, the reductions in such member's service retirement benefit otherwise computed without optional modification shall be administered as follows: for each full month by which retirement predates age 63, such benefit shall be reduced by 6.5/1200 per month.
N.Y. Comp. Codes R. & Regs. Tit. 21 § 5005.6