Deductions, in such amounts and at such time or times as the Commissioner of Social Security shall determine, shall be made from any payment or payments under this subchapter to which an individual is entitled, until the total of such deductions equals such individual’s benefits or benefit under section
402 of this title for any month—
For purposes of paragraphs (2), (3), and (4) of this subsection, a child shall not be considered to be entitled to a child’s insurance benefit for any month in which paragraph (1) of section
402
(s) of this title applies or an event specified in section
422
(b) of this title occurs with respect to such child. Subject to paragraph (3) of such section
402
(s) of this title, no deduction shall be made under this subsection from any child’s insurance benefit for the month in which the child entitled to such benefit attained the age of eighteen or any subsequent month; nor shall any deduction be made under this subsection from any widow’s or widower’s insurance benefit if the widow, surviving divorced wife, widower, or surviving divorced husband involved became entitled to such benefit prior to attaining age 60.